Cloud T80 Data Leak: 745,205 Stolen Credentials Published

HEROIC's threat monitoring systems flagged the Cloud T80 stealer log as it appeared on underground dark web platforms in June 2026. This substantial data leak contains 745,205 records of stolen credentials, making it one of the larger stealer log collections recently detected by HEROIC's intelligence team.

Why 745,205 Plaintext Passwords Demand Urgent Action

Every single password in the Cloud T80 collection is available in plaintext, meaning threat actors have nearly three-quarters of a million ready-to-use credentials at their fingertips. At this volume, the likelihood of your accounts being included increases significantly. Plaintext passwords bypass all cryptographic protections and allow attackers to begin account infiltration the moment they obtain the data, without any password-cracking tools or computational investment.

What Was Exposed

• Email Addresses — hundreds of thousands of personal and business email accounts identified
• Plaintext Passwords — unprotected credentials providing direct access to victim accounts
• URLs — the exact websites, services, and login portals from which credentials were stolen

Massive Credential Stuffing Campaigns Follow Large Leaks

A data set containing 745,205 credential pairs is highly prized by organized cybercriminal groups who specialize in large-scale credential stuffing. These operations deploy botnets to test stolen email and password combinations against thousands of online services simultaneously, from major retailers and financial institutions to cloud platforms and corporate networks. The scale of this leak means attackers can run prolonged, high-volume campaigns with excellent success rates wherever password reuse exists.

The Stealer Log Threat: How Malware Fuels Data Leaks

Cloud T80 is a stealer log assembled from data collected by infostealer malware infections across a wide range of devices. This malware infiltrates systems through drive-by downloads, malicious email attachments, and fake application installers. Once active, it systematically harvests saved passwords from every browser on the device, captures cryptocurrency wallet data, extracts two-factor authentication codes, and collects session cookies that can bypass login screens entirely. The resulting log files are packaged and sold to the highest bidder on dark web markets.

Check If Your Credentials Were Exposed

HEROIC's database of over 400 billion compromised credentials is the most comprehensive resource available for breach detection. Scan your email address through HEROIC's free breach checker to find out if your credentials appear in the Cloud T80 data leak or any of the other breaches and stealer logs that HEROIC continuously monitors.