Trezor, a maker of hardware devices used to store cryptocurrencies, said personal information belonging to thousands of customers was exposed in a data breach affecting one of its shipping providers, the latest security incident to hit the digital-asset industry.
The Prague-based company said in a post on X on Thursday that 11,742 customers had their names, shipping and email addresses and phone numbers exposed, while another 1,947 only had some personal data compromised. The breach affected customers in the US, UK, Sweden, Colombia, Brazil, Italy, and Portugal who had received an order within the 90 days preceding Aug. 8. Older data had already been deleted.
The company’s systems and devices remain secure, but affected customers could experience an increase in phishing attempts, the post said.
“We absolutely understand how serious this is and the potential risks it poses to our customers and are deeply sorry to those affected,” Trezor said in an emailed statement.
The personal data breach is particularly sensitive for customers because it an can be used to potentially expose them to targeted cyber or even physical attacks. The latter have been on the rise this year, with around 52 such incidents occurring worldwide in the first half of 2026, up 33% from the comparable period last year, according to security firm CertiK.
The Trezor incident comes on the heels of a breach involving another hardware-wallet maker, Toronto-based Coinkite Inc., adding concerns about the heightened risks crypto holders face, even when taking all the recommended precautions to secure their assets.
“As the Bitcoin industry still absorbs the fallout from the Coldcard hack, the latest incident underlines how quickly trust can be undermined when attackers target the ecosystem around the wallet rather than the wallet itself,” said Ashna Vaghela, chief customer officer at Mercuryo.
Hardware wallets, also known as cold wallets, are physical devices designed to keep the codes used to access crypto away from internet-connected systems. They have long been promoted as one of the safest ways to hold digital assets, shielding them from possible exchange fraud or failures that have plagued the sector.
Digital crypto attacks have become more frequent this year, even as losses have declined. Hackers stole about $972 million in the first half of 2026, down from $2.3 billion a year earlier, though the 207 incidents recorded were the highest for any six-month period on record, according to TRM Labs.
“We are investigating this situation and will post updates on our blog,” Trezor said in the post.
Photograph: Red light illuminates the keys of a laptop computer at the Dreamhack digital festival in Moscow; photo credit: Bloomberg
Topics Cyber
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