Trezor warns of suspected crypto-theft implant in hardware wallet

A Trezor Safe 5 purchased through an unauthorized Southeast Asian reseller, CryptoBilis, was found to contain a hidden circuit board capable of reading and wirelessly transmitting seed phrases over cellular networks — a sophisticated hardware supply chain attack. The root cause is a failure to enforce authorized reseller controls and educate end-users on verifying device integrity before use. This matters enormously because hardware wallets are trusted as the last line of defense for cryptocurrency security; a compromised device silently undermines that trust entirely. Notably, the same reseller was linked to a prior Ledger compromise, indicating a persistent, targeted supply chain threat actor that went unaddressed.