URGENT: If you own a Coldcard, read this now.
A firmware bug traced to 2021 has drained well over 1,000 Bitcoin, and Dante's tracking the number as it climbs, with reports still coming in.
Affected: MK3, reportedly MK4, Q, MK5. Migrate if you used on device RNG.
Simply Bitcoin
npub1vz…nx9gc
2026-08-01 16:40:48 UTC
Author Public Key
npub1vzjukpr2vrxqg2m9q3a996gpzx8qktg82vnl9jlxp7a9yawnwxfsqnx9gcSeen on
wss://relay.damus.ioPublished at
2026-08-01 16:40:48 UTCEvent JSON
{
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"pubkey": "60a5cb046a60cc042b65047a52e901118e0b2d075327f2cbe60fba5275d37193",
"created_at": 1785602448,
"kind": 1,
"tags": [
[
"imeta",
"url https://blossom.primal.net/8ab4a4216fed3969748e3d21086558966ca0e47c68fb0088025244eb2878e375.mp4",
"m video/mp4",
"x 8ab4a4216fed3969748e3d21086558966ca0e47c68fb0088025244eb2878e375",
"size 250628474"
]
],
"content": "URGENT: If you own a Coldcard, read this now.\n\nA firmware bug traced to 2021 has drained well over 1,000 Bitcoin, and Dante's tracking the number as it climbs, with reports still coming in.\n\nAffected: MK3, reportedly MK4, Q, MK5. Migrate if you used on device RNG.\n\nhttps://blossom.primal.net/8ab4a4216fed3969748e3d21086558966ca0e47c68fb0088025244eb2878e375.mp4",
"sig": "2097387b03c7f0ce01b297bab32099e34525f375febea8033db5a41ff211962d486ef0c0a989a38009f9fcc7fcf7e72f921daef2ebe573fcd4af33c63f5c5dcc"
}