Trezor One and Model T wallets found with microcontroller implants generating attacker-known seed phrases, sold via unauthorized sellers
Hardware hacker Joe Grand found tampered Trezor Model T and Trezor One wallets sold through unauthorized third-party channels (Facebook Marketplace in Canada in 2025, and a TikTok shop in August 2026, shipped from China). The attackers replaced the microcontroller with one running malicious firmware that hands users one of about a dozen p…