COLDCARD Security Advisory
A seed-generation defect affected releases beginning with firmware 4.0.1. Fixed firmware is available. Existing affected seeds still require migration.
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Search COLDCARD
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Technology
NFC Push TX
Key Teleport
BBQr
Trick PINs
Seed XOR
BIP-85
Secure Notes & Passwords
Encrypted Backups
Address Explorer
Multisig
COLDCARD Co-Signing
Descriptor Export
MicroSD 2FA
Temporary Seeds
Get in touch
X / Twitter
Telegram
Support
Company
About
Resellers
Resources
Security
FAQ
Compare Hardware Wallets
Advanced Topics
Mk4 Security Model
Blog
Newsletter
More from Coinkite
OPENDIME
SEEDPLATE
BLOCKCLOCK mini
TAPSIGNER Wallet
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