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Trezor Users Targeted in Phishing Attack Following Brevo Data Breach

Trezor Users Targeted in Phishing Attack Following Brevo Data Breach

First seen 11 Sep 2026, 01:16 UTC • •

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ThreatCluster AI
ThreatCluster •September 12, 2026 at 00:57 UTC
  • •347,000 Trezor users targeted by phishing emails due to Brevo breach.
  • •Attackers exploited Trezor's domain to send convincing phishing emails.
  • •Approximately 2,500 users interacted with malicious links before Trezor's response.

Trezor, a Bitcoin hardware wallet manufacturer, reported a data breach involving Brevo, a third-party marketing platform. This breach allowed attackers to send phishing emails to 347,000 Trezor customers, leveraging Trezor's domain for credibility. The phishing emails contained malicious links aimed at tricking users into downloading harmful applications and revealing their wallet backups. Trezor acted quickly, disabling the compromised domain within 20 minutes, but approximately 2,500 users had already interacted with the malicious links. The company emphasized that it never requests wallet backups from customers. This incident follows previous breaches affecting Trezor's fulfillment partner and other cryptocurrency services. Trezor has suspended its Brevo account to prevent further email distribution. The situation remains critical as users are urged to remain vigilant against phishing attempts.

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Timeline

2026-09-10
Trezor announces Brevo breach
Trezor reported a data breach at Brevo affecting 347,000 customers, leading to phishing attempts.
Kucoin
2026-09-10
Phishing emails sent to Trezor users
Phishing emails were sent to users leveraging Trezor's domain, tricking them into revealing sensitive information.
Binance
2026-09-11
Trezor confirms phishing impact
Trezor confirmed that 2,500 users clicked on malicious links before the domain was disabled.
Kucoin
2026-09-11
Brevo breach reported
Brevo's security breach was confirmed, affecting 138 accounts, but primarily impacting Trezor users.
Betanews

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