The hidden risk of updatable firmware

Apr 25 2025 bitcoin


Crypto’s hidden threat: firmware updates in hardware wallets can be ticking time bombs, introducing vulnerabilities and backdoors.

Opinion by: Igor Zemtsov, chief technology officer at TBCC

Crypto security is a ticking time bomb. Updatable firmware might just be the match that lights the fuse.

Hardware wallets have become the holy grail of self-custody, the ultimate safeguard against hackers, scammers and even government overreach. There’s an inconvenient truth, however, that most people ignore: Firmware updates aren’t just security patches. 

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