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Hackers Send Physical Phishing Letters Impersonating Trezor and Ledger to Trick Users

Hackers Send Physical Phishing Letters Impersonating Trezor and Ledger to Trick Users

The hackers primarily targeted the customers of two cryptocurrency wallet security firms.

Written by Dhruv Raghav, Edited by David Delima | Updated: 17 February 2026 17:50 IST

Hackers Send Physical Phishing Letters Impersonating Trezor and Ledger to Trick Users

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Crypto hackers were duping customers to reveal their account recovery phrases

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Highlights

Hackers sent physical letters to dupe crypto customers
The fake letters carried a QR code redirecting to a scam site
The company clarified that it doesn’t contact the users first

A cybersecurity expert has warned that hackers have now started targeting customers of a cryptocurrency wallet security company, ironically sending physical letters to users, to access their crypto wallet recovery phrases. Recently, a report highlighted that bad actors have started duping industry leaders and stakeholders with fake Zoom video conferences and compromised Telegram accounts. In the last few years, crypto scams have become increasingly sophisticated, and bad actors have become more crafty with their tricks.

Fake Letters Impersonating Cryptocurrency Wallet Security Firms Carried Signatures of Executives

In a post on X, Dmitry Smilyanets, a cyber threat intelligence expert and Senior Director of Product Management at Recorded Future, has highlighted that a group of hackers has sent fake physical letters to multiple customers of Trezor, a cryptocurrency wallet security company, impersonating the firm. He pointed out that the letter carries a hologram and a QR code to a fake website. The hackers have also used the signature of Trezor CEO, Matěj Žák, in an attempt to dupe customers.

Separately, an X user has also posted, claiming that Trezor is not only the company that cryptocurrency hackers are impersonating. Similar letters, with the company letterhead, were reportedly mailed to the customers of Paris-based Ledger, another cryptocurrency security firm. The fake Ledger letters followed the same format, including the signature of the company's Chief Technology Officer (CTO), Charles Guillemet.

X Will Soon Let Users Check Cryptocurrency Prices in Real-Time

Both letters were shown to have a similar subject line, informing customers that Trezor and Ledger will “soon” make the authentication of each transaction “mandatory”, calling it a new security feature to “provide greater confidence” in the safety of their transactions.

The fake letters then instructed recipients to scan the QR code with their smartphones and follow the steps shown on the screen to avoid service disruption. Smilyanets highlighted that this QR code redirects users to a “scam website”, which is designed (via Crypto.News) to steal the account recovery phrases of customers, consequently gaining unauthorised access to their wallets.

Replying to the post, Trezor confirmed that the company “never” contacts its customers first, while warning users to “never share” their wallet backup with anyone. The firm advised users to verify the official channels before moving forward. “Stay safe out there, everyone,” Trezor said in a statement.

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Further reading: Cryptocurrency scams, Cryptocurrency, Ledger, Trezor, Crypto

Dhruv Raghav

Email Dhruv Raghav

Dhruv Raghav is currently working as a Senior Sub Editor at Gadgets360. He has previously covered the North American financial markets as a Headline News Correspondent for a major news agency. After taking a sabbatical to prepare for the Civil Services examination, he returned to journalism to cover tech policy, with a special focus on AI laws and online gaming regulation. Now, he is back in Gadgets360 to write features and edit stories. To unwind, he likes to spend time with his PS5, listening ...More