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Trezor warns users of email provider breach, phishing attacks
Trezor said the fake alert is tied to a breached email provider and warned users not to click links in the message.
On Wednesday, Trezor and BitBox warned users of a phishing campaign after their shared third-party email provider was breached, with fraudulent emails falsely claiming a "Critical Security Alert: STM32 Entropy Vulnerability."
Preliminary investigations suggest the companies' shared newsletter provider was compromised, enabling attackers to target multiple Bitcoin businesses simultaneously while both firms investigate the unauthorized access.
The phishing emails directed recipients to a fraudulent domain presenting a fake "Critical Security Alert: STM32 Entropy Vulnerability" warning, prompting both companies to advise users not to click any links in the messages.
Trezor and BitBox took down the malicious domain and instructed users to ignore the emails, which impersonated the hardware wallet manufacturers to solicit sensitive recovery phrases under false pretenses.
This incident follows a Coldcard firmware vulnerability disclosed earlier this year involving weak random number generation, while Trezor recently expanded disclosures on a separate ShipMonk breach affecting more than 80,000 customers.