{"id":38697,"date":"2026-08-12T19:53:39","date_gmt":"2026-08-12T17:53:39","guid":{"rendered":"https:\/\/crystalintelligence.com\/?p=38697"},"modified":"2026-08-12T20:11:58","modified_gmt":"2026-08-12T18:11:58","slug":"coldcard-exploit-tracing-stolen-bitcoin","status":"publish","type":"post","link":"https:\/\/crystalintelligence.com\/investigations\/coldcard-exploit-tracing-stolen-bitcoin\/","title":{"rendered":"Tracing the Coldcard Hack: Where the Stolen Bitcoin Went"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"38697\" class=\"elementor elementor-38697\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7d6efc3d e-con-full e-flex e-con e-parent\" data-id=\"7d6efc3d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-368f137d elementor-widget__width-auto elementor-widget elementor-widget-image\" data-id=\"368f137d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"40\" height=\"40\" data-src=\"https:\/\/crystalintelligence.com\/rohirov\/2026\/03\/Blog-Icon.svg\" class=\"attachment-full size-full wp-image-36274 lazyload\" alt=\"\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 40px; --smush-placeholder-aspect-ratio: 40\/40;\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1f39136b e-con-full e-flex e-con e-child\" data-id=\"1f39136b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7aeb241e elementor-widget elementor-widget-heading\" data-id=\"7aeb241e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">By the Crystal Intelligence Team<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-390d39c4 elementor-widget elementor-widget-heading\" data-id=\"390d39c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Crystal Foresight Product Leader \n<\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-40e975ae e-con-full e-flex e-con e-parent\" data-id=\"40e975ae\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5f55c539 e-con-full e-flex e-con e-child\" data-id=\"5f55c539\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-64629e16 e-con-full e-flex e-con e-child\" data-id=\"64629e16\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2d6e5504 elementor-widget-tablet_extra__width-initial elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"2d6e5504\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Share via:\n<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54255ffe elementor-widget elementor-widget-image\" data-id=\"54255ffe\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"facebook-post\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"36\" height=\"36\" data-src=\"https:\/\/crystalintelligence.com\/rohirov\/2026\/02\/FB.svg\" class=\"attachment-full size-full wp-image-35273 lazyload\" alt=\"\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 36px; --smush-placeholder-aspect-ratio: 36\/36;\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-79b3b82b elementor-widget elementor-widget-image\" data-id=\"79b3b82b\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"linkedin-post\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"36\" height=\"36\" data-src=\"https:\/\/crystalintelligence.com\/rohirov\/2026\/02\/In.svg\" class=\"attachment-full size-full wp-image-35275 lazyload\" alt=\"\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 36px; --smush-placeholder-aspect-ratio: 36\/36;\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20287cef elementor-widget elementor-widget-image\" data-id=\"20287cef\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"x-post\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"36\" height=\"36\" data-src=\"https:\/\/crystalintelligence.com\/rohirov\/2026\/02\/x.svg\" class=\"attachment-full size-full wp-image-35274 lazyload\" alt=\"\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 36px; --smush-placeholder-aspect-ratio: 36\/36;\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-458cfce5 e-con-full e-flex e-con e-child\" data-id=\"458cfce5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-695353f elementor-align-left elementor-widget elementor-widget-post-info\" data-id=\"695353f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-75ab97c elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-custom\">\n\t\t\t\t\t\t\t\t\t\tUpdated on: August 12, 2026\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4aafaca7 e-con-full e-flex e-con e-parent\" data-id=\"4aafaca7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5a35504 e-con-full e-flex e-con e-child\" data-id=\"5a35504\" data-element_type=\"container\" data-e-type=\"container\" id=\"content-container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a2d706f elementor-widget elementor-widget-text-editor\" data-id=\"6a2d706f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 aria-level=\"2\">In this article:<\/h2><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"none\">A firmware bug let Coldcard hardware wallets generate weak, guessable seed phrases instead of properly random ones, letting attackers crack private keys and empty wallets that were never even connected to the internet.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"none\">The bug shipped in firmware released from March 2021 onward and went unnoticed for\u00a0roughly five\u00a0years.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"none\">Attackers have stolen more than 2,000 BTC, around $130 million, in several waves since July 30, 2026, and most of it is still sitting untouched in their wallets.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"4\" data-aria-level=\"1\"><span data-contrast=\"none\">If you generated a seed on affected firmware, updating alone will not protect you. You need to generate a brand-new seed and move your funds.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"5\" data-aria-level=\"1\"><span data-contrast=\"none\">This is still happening. Multiple attackers are involved, and unpatched wallets\u00a0remain\u00a0at risk.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><h2 aria-level=\"2\">What was the\u00a0Coldcard\u00a0vulnerability?\u00a0<\/h2><p><span data-contrast=\"none\">The\u00a0Coldcard\u00a0vulnerability was a\u00a0<\/span><span data-contrast=\"none\">random number generator flaw in the wallet\u2019s firmware<\/span><span data-contrast=\"none\">\u00a0that made seed phrase generation predictable. Instead of drawing entropy from the device\u2019s hardware random number generator, affected units silently fell back to a weak software substitute built from predictable device data.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">Here is what went wrong, in sequence:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><ol><li><span data-contrast=\"none\">During a\u00a0<\/span><span data-contrast=\"none\">2021 migration between software libraries<\/span><span data-contrast=\"none\">, two random-number functions with matching interfaces were confused for one another.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><li><span data-contrast=\"none\">A configuration setting was present in the build but disabled, causing seed generation to silently fall back to the software path<\/span><span data-contrast=\"none\">\u00a0<\/span><span data-contrast=\"none\">\u2014 with no error, no warning, and no visible difference to the user.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><li><span data-contrast=\"none\">That fallback derived its randomness from predictable device information, including\u00a0<\/span><span data-contrast=\"none\">a chip identifier\u00a0similar to\u00a0a serial number and internal clock values tied to startup timing<\/span><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><li><span data-contrast=\"none\">The result was a drastically reduced\u00a0keyspace. Attackers could crack the seed phrases and reconstruct private keys without ever touching the device or the owner\u2019s network.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ol><p><span data-ccp-props=\"{&quot;335559739&quot;:140}\">\u00a0<\/span><\/p><p><b><span data-contrast=\"none\">Effective entropy by device<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:100,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><table data-tablestyle=\"MsoNormalTable\" data-tablelook=\"1184\" aria-rowcount=\"5\" aria-colcount=\"3\"><tbody><tr aria-rowindex=\"1\"><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Device<\/b>\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Effective entropy<\/b>\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Expected for a 12-word seed<\/b>\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"2\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Mk3<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">~40 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">128 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"3\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Mk4<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">~72 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">128 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"4\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Mk5<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">~72 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">128 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"5\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Q<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">~72 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">128 bits<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><\/tbody><\/table><p><span data-ccp-props=\"{&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">To put 40 bits in context: that is a\u00a0keyspace\u00a0of\u00a0roughly a\u00a0trillion possibilities \u2014 small enough to search exhaustively with modest computing resources. The security model of a hardware wallet assumes the seed is unguessable. Here it was guessable, which is why air-gapping provided no protection whatsoever.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><p><a href=\"https:\/\/blog.coinkite.com\/coldcard-mk3-seed-generation-warning\/\"><span data-contrast=\"none\">Coinkite<\/span><\/a><span data-contrast=\"none\">\u00a0published a security advisory on July 30, 2026 (updated August 1) acknowledging the flaw. The advisory states plainly that\u00a0<\/span><i><span data-contrast=\"none\">\u201cupdating the firmware does not change or repair an existing seed\u201d<\/span><\/i><span data-contrast=\"none\">\u00a0and that version 4.2.0\u00a0<\/span><i><span data-contrast=\"none\">\u201ccannot repair a seed that was already generated by affected firmware.\u201d<\/span><\/i><span data-contrast=\"none\">\u00a0CEO Rodolfo Novak also apologized publicly. Coverage of his remarks varies by outlet, and we have not been able to verify a single, consistent direct quote on responsibility, so we are citing\u00a0Coinkite\u2019s\u00a0own written advisory rather than a paraphrased quote.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h2 aria-level=\"2\">Timeline\u00a0<\/h2><table data-tablestyle=\"MsoNormalTable\" data-tablelook=\"1184\" aria-rowcount=\"8\" aria-colcount=\"2\"><tbody><tr aria-rowindex=\"1\"><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Date<\/b>\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Event<\/b>\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"2\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">March 2021<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Vulnerable firmware begins shipping following the library migration<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"3\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">30 July 2026<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">First mass sweep \u2014 1,196 addresses drained in 41 minutes, taking 1,082.65 BTC (~$70.2M at the time)<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"4\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">31 July 2026<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coinkite\u00a0CEO Rodolfo Novak publicly accepts responsibility. Early loss estimates around $38M<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"5\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">3 August 2026<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Estimates revised sharply upward to ~$116M as more addresses are\u00a0identified<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"6\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">4 August 2026<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Totals pass $130M. Multiple independent attacker groups confirmed<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"7\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">6\u20137 August 2026<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Galaxy Research verifies 1,596 BTC from ~7,300 addresses across three waves; a suspected fourth wave would take it to ~2,055 BTC. Laundering activity begins on one cluster<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"8\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">10 August 2026<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Reported totals exceed 2,000 BTC. Exploitation of unpatched wallets continues<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><\/tbody><\/table><p><span data-ccp-props=\"{&quot;335559739&quot;:160}\">\u00a0<\/span><\/p><p><b><span data-contrast=\"none\">A note on the numbers.\u00a0<\/span><\/b><span data-contrast=\"none\">Public estimates moved from $38M to over $130M in six days, and\u00a0various\u00a0outlets have cited $89M, $116M, $120M,\u00a0and $130M at different\u00a0points. This is normal for an incident where victim addresses are still being\u00a0identified,\u00a0but it means any figure needs an \u201cas of\u201d date attached. Every number in this post carries one.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h2 aria-level=\"2\">Where the stolen bitcoin went\u00a0<\/h2><p aria-level=\"3\"><b><span data-contrast=\"none\">What is\u00a0publicly known<\/span><\/b><span data-ccp-props=\"{&quot;335559738&quot;:240,&quot;335559739&quot;:120}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">The most striking feature of this theft is how little of it has moved.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"6\" data-aria-level=\"1\"><span data-contrast=\"none\">~90% of the stolen bitcoin remained unmoved<\/span><span data-contrast=\"none\">\u00a0as of August\u00a07,\u00a02026.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"7\" data-aria-level=\"1\"><span data-contrast=\"none\">The\u00a0<\/span><span data-contrast=\"none\">largest attacker holds 1,159 BTC across seven addresses<\/span><span data-contrast=\"none\">, which have not moved since the\u00a0initial\u00a0sweep. Investigators have not detected transfers from those addresses to exchanges,\u00a0mixers\u00a0or other obscuring services. A note as of publication: on August 7, 2026,\u00a0<\/span><a href=\"https:\/\/news.bitcoin.com\/featured\/coldcard-hacker-resumes-moving-stolen-bitcoin\/\"><span data-contrast=\"none\">news.bitcoin.com reported<\/span><\/a><span data-contrast=\"none\">\u00a0that the attacker holding the largest share of the theft had resurfaced to move\u00a0roughly 30\u00a0BTC to a new wallet after weeks of dormancy, an early signal analysts read as possible cash-out preparation. It is not yet clear from public reporting whether this is the same seven-address cluster referenced above or a different one, so treat the \u201cuntouched\u201d figures on this page as\u00a0accurate\u00a0as of the sweep date and re-verify\u00a0current status\u00a0before publishing.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"8\" data-aria-level=\"1\"><span data-contrast=\"none\">A\u00a0<\/span><span data-contrast=\"none\">separate, smaller attacker began\u00a0laundering<\/span><span data-contrast=\"none\">:\u00a0roughly 64\u00a0BTC was routed to a mixer, with about 10 BTC mixed and about 54 BTC returned as change. The\u00a0remainder\u00a0was then split into outputs of\u00a0roughly 7\u00a0BTC each for further mixing.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"9\" data-aria-level=\"1\"><span data-contrast=\"none\">Approximately\u00a0<\/span><b><span data-contrast=\"none\">600 flagged addresses<\/span><\/b><span data-contrast=\"none\">\u00a0\u2014 confirmed attacker and victim addresses \u2014 have been shared with US law enforcement agencies,\u00a0exchanges\u00a0and cyber-investigation groups.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\u2022\" data-font=\"\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:360,&quot;335559991&quot;:220,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u2022&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"10\" data-aria-level=\"1\"><span data-contrast=\"none\">Every laundering step so far\u00a0<\/span><b><span data-contrast=\"none\">remains\u00a0visible on the public ledger<\/span><\/b><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ul><p><span data-contrast=\"none\">Galaxy Research and Chainalysis have both published analysis of the attack waves.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h2 aria-level=\"3\">Crystal\u2019s tracing\u00a0<\/h2><p><span data-contrast=\"none\">Crystal traced the addresses drained in the attack back through their transaction history using Crystal Expert\u2019s address-level connection analysis. A subset of them received small, dust-sized deposits, worth a fraction of a cent, from a Wasabi wallet cluster in the months before the theft. Those deposits arrived in irregular waves starting in December 2025 and continuing into 2026, and the same addresses that received them are the ones swept on July 30, 2026.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">One possible read: whoever ran the attack may have used these dust deposits to flag or pre-identify\u00a0vulnerable addresses months ahead of striking. That is a working theory, not a confirmed finding, and we have not ruled out coincidence or an unrelated dusting campaign. We are still quantifying how many affected addresses show the pattern and how closely it lines up with the four attack waves, and we will update this section once that analysis is complete.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h2 aria-level=\"2\">Am I affected, and what should I do?\u00a0<\/h2><p><b><span data-contrast=\"none\">You are potentially affected if you generated a seed phrase on a\u00a0Coldcard\u00a0device running firmware released from March 2021 onward.<\/span><\/b><span data-contrast=\"none\">\u00a0The risk attaches to the seed, not the device.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><table data-tablestyle=\"MsoNormalTable\" data-tablelook=\"1184\" aria-rowcount=\"5\" aria-colcount=\"3\"><tbody><tr aria-rowindex=\"1\"><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Device<\/b>\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Fixed in<\/b>\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span style=\"color: #ffffff;\"><b>Known vulnerable<\/b>\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"2\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Mk3<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">v4.2.0 and later<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">v4.0.1 \u2013 v4.1.9<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"3\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Mk4<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">v5.6.0 and later<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">releases before v5.6.0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"4\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Mk5<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">v5.6.0 and later<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">releases before v5.6.0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><tr aria-rowindex=\"5\"><td data-celllook=\"69905\"><p><span data-contrast=\"none\">Coldcard\u00a0Q<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">v1.5.0Q and later<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><td data-celllook=\"69905\"><p><span data-contrast=\"none\">releases before v1.5.0Q<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559740&quot;:260}\">\u00a0<\/span><\/p><\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><h2 aria-level=\"3\">The critical point most coverage buries\u00a0<\/h2><p><span data-contrast=\"none\">Updating your firmware does not make an existing seed safe.<\/span><span data-contrast=\"none\">\u00a0A seed generated under affected firmware is permanently weakened, regardless of what firmware the device runs afterwards. The weakness is baked into the seed itself.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">Coinkite\u00a0has been explicit that installing the patch\u00a0<\/span><i><span data-contrast=\"none\">\u201cdoes not repair an existing seed\u201d<\/span><\/i><span data-contrast=\"none\">,\u00a0and \u2014 the trap worth spelling out \u2014\u00a0<\/span><i><span data-contrast=\"none\">\u201crestoring the old seed to updated firmware or another wallet carries the weakness forward.\u201d<\/span><\/i><span data-contrast=\"none\">\u00a0Moving a compromised seed to a brand-new device, or to a different wallet entirely, does nothing. The seed is the problem.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">If you generated a seed on affected firmware:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><ol><li><span data-contrast=\"none\">Update to patched firmware<\/span><span data-contrast=\"none\">\u00a0for your device model above.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><li><span data-contrast=\"none\">Generate an entirely new seed<\/span><span data-contrast=\"none\">\u00a0on the patched firmware.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><li><span data-contrast=\"none\">Move all funds<\/span><span data-contrast=\"none\">\u00a0to addresses derived from the new seed.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><li><span data-contrast=\"none\">Treat the old seed as permanently compromised.<\/span><span data-contrast=\"none\">\u00a0Never reuse it, and do not assume a low balance makes it safe \u2014 attackers swept\u00a0roughly 7,300\u00a0addresses indiscriminately.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><li><span data-contrast=\"none\">Verify your new seed\u2019s entropy source<\/span><span data-contrast=\"none\">\u00a0if your device offers dice-roll or user-supplied entropy.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:90,&quot;335559740&quot;:300}\">\u00a0<\/span><\/li><\/ol><p><span data-ccp-props=\"{&quot;335559739&quot;:100}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">Do not delay on the basis that your wallet has not been touched yet. Attackers are continuing to work through unpatched wallets, and\u00a0roughly 90%\u00a0of the already-stolen funds sitting still is evidence of patience, not of the attack being over.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h2 aria-level=\"2\">What this means beyond\u00a0Coldcard\u00a0<\/h2><p><span data-contrast=\"none\">This incident has already become a talking point in the wider debate about how bitcoin should be held.\u00a0<\/span><a href=\"https:\/\/www.forbes.com\/sites\/boazsobrado\/2026\/08\/10\/after-a-130-million-hack-bitcoin-asks-who-should-hold-the-keys\/\"><span data-contrast=\"none\">Forbes reported<\/span><\/a><span data-contrast=\"none\">\u00a0that in the days after the exploit, US spot bitcoin ETFs took in\u00a0roughly $626 million\u00a0in new inflows, and some industry voices are framing that as evidence that regulated custody is safer than self-custody. Others, including long-time self-custody advocates, argue the opposite: that a firmware bug in one vendor&#8217;s hardware wallet says nothing about self-custody as a model, and that concentrating assets with a small number of custodians creates its own risk.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><p><span data-contrast=\"none\">Crystal\u00a0doesn&#8217;t\u00a0take a side in that argument, but we do have a relevant vantage point: we trace funds regardless of who holds them, whether\u00a0that&#8217;s\u00a0a self-custody wallet, an exchange, or a regulated custodian. What this incident\u00a0actually shows\u00a0is narrower than either side&#8217;s framing: the failure was in how one device generated randomness, not in the concept of holding your own keys. The bigger lesson for institutions evaluating custody options is to ask vendors specifically how they generate and audit entropy, rather than treating this as a referendum on self-custody itself.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h2 aria-level=\"2\">FAQ\u00a0<\/h2><h3>What is the\u00a0Coldcard\u00a0hack?\u00a0<\/h3><p><span data-contrast=\"none\">A firmware flaw in\u00a0Coldcard\u00a0hardware wallets caused seed phrases to be generated with far less randomness than intended, letting attackers crack private keys and drain wallets. The first mass theft occurred on July 30, 2026.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h3>How much bitcoin was stolen in the\u00a0Coldcard\u00a0exploit?\u00a0<\/h3><p><span data-contrast=\"none\">Galaxy Research verified 1,596 BTC taken from approximately 7,300 addresses across three attack waves, with a suspected fourth wave bringing the total to\u00a0roughly 2,055\u00a0BTC \u2014 around $130 million. Estimates rose from $38M to over $130M between 31 July and 4 August 2026 as more victim addresses were\u00a0identified.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h3>Which\u00a0Coldcard\u00a0devices and firmware versions are affected?\u00a0<\/h3><p><span data-contrast=\"none\">Firmware released from March 2021 onward across Mk3, Mk4, Mk5 and Q devices. Fixes shipped in Mk3 v4.2.0, Mk4 and Mk5 v5.6.0, and Q v1.5.0Q. Devices running Edge firmware need a different fix: v6.6.0X for Mk4\/Mk5 and v6.6.0QX for Q, per\u00a0Coldcard&#8217;s\u00a0own security status page.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h3>Does updating my\u00a0Coldcard\u00a0firmware protect me?\u00a0<\/h3><p><span data-contrast=\"none\">No. A seed generated on affected firmware is permanently weakened regardless of what firmware the device runs afterwards. You must generate a new seed on patched firmware and move your funds.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h3>Was this because my wallet was connected to the internet?\u00a0<\/h3><p><span data-contrast=\"none\">No. The affected wallets were\u00a0air-gapped. The weakness was in how the seed was created on the device, so no network exposure was needed for attackers to reconstruct the keys.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h3>Has the stolen bitcoin been recovered or frozen?\u00a0<\/h3><p><span data-contrast=\"none\">As of August 7, 2026,\u00a0roughly 90%\u00a0of the stolen bitcoin had not moved, the largest attacker\u2019s 1,159 BTC sat untouched across seven addresses, and about 600 flagged addresses had been circulated to law enforcement and exchanges. Crystal\u2019s own tracing also found that a number of victim addresses received small dust deposits from a Wasabi wallet cluster in the months before the theft, a pattern that may point to advance targeting, though this is a working theory rather than a confirmed finding. One\u00a0caveat: a report on August 7,\u00a02026\u00a0described renewed movement of\u00a0roughly 30\u00a0BTC by the attacker holding the largest share of the theft, so these figures should be re-verified against Crystal\u2019s current tracking before this goes live.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h3>Can the stolen funds be traced?\u00a0<\/h3><p><span data-contrast=\"none\">Yes. Every movement so far\u00a0remains\u00a0visible on the public ledger, including the mixing attempt on one cluster. Crystal Expert\u2019s connection analysis is following the post-mix outputs now, and we will publish what that tracing shows, including where the trail holds and where it breaks down, once the analysis is complete.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h3>Is the\u00a0Coldcard\u00a0exploit still ongoing?\u00a0<\/h3><p><span data-contrast=\"none\">Yes. Multiple independent attackers are involved and unpatched wallets\u00a0remain\u00a0exploitable, so owners who have not rotated their seeds are still at risk.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:180,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p><h2 aria-level=\"2\">The bottom line\u00a0<\/h2><p><span data-contrast=\"none\">The\u00a0Coldcard\u00a0exploit is a reminder that a hardware wallet is only as secure as the randomness behind it. If you generated a seed on affected firmware, updating alone will not protect you: generate a new seed, move your funds, and treat the old seed as permanently compromised. With multiple independent attackers still working through unpatched wallets, this is not resolved yet.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-47228bfb e-con-full e-flex e-con e-child\" data-id=\"47228bfb\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-65d65f7a elementor-widget elementor-widget-text-editor\" data-id=\"65d65f7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"TextRun SCXW67408338 BCX0\" lang=\"EN-GB\" xml:lang=\"EN-GB\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW67408338 BCX0\">Crystal is continuing to trace where the stolen funds go, including the patterns covered above, and we will update this page as the picture develops. For more on how incidents like this get traced\u00a0<\/span><span class=\"NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW67408338 BCX0\">on-chain<\/span><span class=\"NormalTextRun SCXW67408338 BCX0\">, visit\u00a0<\/span><span class=\"NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW67408338 BCX0\">our<\/span><span class=\"NormalTextRun SCXW67408338 BCX0\">\u00a0<\/span><\/span><a class=\"Hyperlink SCXW67408338 BCX0\" href=\"https:\/\/crystalintelligence.com\/investigations\/the-10-biggest-crypto-hacks-in-history\/\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"TextRun SCXW67408338 BCX0\" lang=\"EN-GB\" xml:lang=\"EN-GB\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW67408338 BCX0\">investigations hub<\/span><\/span><\/a><span class=\"TextRun SCXW67408338 BCX0\" lang=\"EN-GB\" xml:lang=\"EN-GB\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW67408338 BCX0\">. If you work in compliance, investigations, or risk and want to see that same tracing capability applied to your own exposure,\u00a0<\/span><\/span><a class=\"Hyperlink SCXW67408338 BCX0\" href=\"https:\/\/crystalintelligence.com\/get-crystal\/\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"TextRun SCXW67408338 BCX0\" lang=\"EN-GB\" xml:lang=\"EN-GB\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW67408338 BCX0\">get a demo<\/span><\/span><\/a><span class=\"TextRun SCXW67408338 BCX0\" lang=\"EN-GB\" xml:lang=\"EN-GB\" data-contrast=\"none\"><span class=\"NormalTextRun SCXW67408338 BCX0\">\u00a0of Crystal Expert.<\/span><\/span><span class=\"EOP Selected SCXW67408338 BCX0\" data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:120,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d01373e elementor-widget elementor-widget-image\" 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wallets generate weak, guessable seed phrases instead of properly random ones, letting attackers crack private keys and empty wallets that were never even connected to the internet. The bug shipped in firmware released from March [&hellip;]<\/p>\n","protected":false},"author":29,"featured_media":38698,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"categories":[14],"tags":[],"class_list":["post-38697","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-investigations"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tracing the Coldcard Hack: Where the Stolen Bitcoin Went | Investigations<\/title>\n<meta name=\"description\" content=\"The Coldcard RNG flaw let attackers crack seed phrases and drain over 2,000 BTC. 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