Scammers target hundreds of thousands of crypto owners after Trezor confirms data breach of email provider

23 hours ago 9
BitcoinImage Credits:Dan Kitwood / Getty Images

6:32 AM PDT · September 11, 2026

Hardware crypto wallet shaper Trezor is informing customers for the 2nd clip successful arsenic galore months that 1 of the companies it relies connected was hacked, exposing the information of Trezor’s customers to hackers.

In a blog station this week, the hardware wallet shaper said a cyberattack connected Brevo, a selling tech institution that Trezor uses to nonstop newsletters, allowed hackers to nonstop astir 347,000 phishing emails to Trezor customers with a malicious nexus purporting to travel from the wallet maker.

The link, erstwhile tapped, downloads an app that asks the unfortunate for their wallet backup password. According to Trezor, 1 of the email taxable lines said: “Critical Security Alert: STM32 Entropy Vulnerability.” 

With a stolen wallet password, a hacker tin irreversibly bargain the person’s funds connected the nationalist blockchain.

Brevo said successful an incidental presumption post that the hackers were capable to entree 138 Brevo accounts to nonstop retired the wide measurement of phishing messages. Brevo said that the hackers abused a flaw that meant the hackers’ entree was “not decently scoped.” The institution said that the hackers’ entree was “wrongly granted” to each organizations that the hackers’ accounts could reach.

The breach highlights a communal information incident, wherever hackers compromise information held by third-party companies that are indispensable for fulfilling orders oregon purchases from customers. Trezor says nary of its products, wallets, oregon relationship strategy was affected by the incident.

This is the 2nd breach successful caller weeks affecting Trezor, aft the institution alerted customers successful August that 1 of its shipping partners was compromised successful a information breach. The incidental astatine the mailing institution ShipMonk exposed the names, telephone numbers, email addresses, and postal addresses of at slightest 81,000 people who bought and received Trezor wallet hardware.

The information breach could enactment crypto owners and different affluent individuals astatine hazard of targeted unit and alleged “wrench” attacks, which trust connected carnal attacks to extract passwords from people.

In the weeks pursuing the breach astatine ShipMonk, immoderate radical person received letters by message claiming to beryllium from Trezor, featuring a QR codification that, erstwhile scanned, opens up a fake leafage that attempts to bargain the victim’s crypto wallet password.

Trezor said it was reevaluating its relationships with its vendors and warned customers that their email addresses whitethorn beryllium utilized again for aboriginal phishing attacks.

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Zack Whittaker is the information exertion astatine TechCrunch. He besides authors the play cybersecurity newsletter, this week successful security.

He tin beryllium reached via encrypted connection astatine zackwhittaker.1337 connected Signal. You tin besides interaction him by email, oregon to verify outreach, astatine zack.whittaker@techcrunch.com.

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