1,518 Plaintext Passwords Dumped in CyanoticCloud Leak

HEROIC detected another stealer log from the CyanoticCloud threat actor on Telegram in February 2026. This particular release contains 1,518 records, each consisting of an email address, a plaintext password, and the URL where the credential was captured. This is one of multiple datasets attributed to CyanoticCloud, indicating a persistent and active operation harvesting login credentials from compromised devices across the United States.

The Immediate Threat of Plaintext Credentials

All 1,518 passwords in this dataset are completely unencrypted. They appear exactly as users originally typed them, with no cryptographic protection of any kind. This eliminates the need for any password-cracking effort on the attacker's part. The credentials are ready for immediate use against any service where the victim has not yet changed their password, making rapid response critical for anyone whose data appears in this leak.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of websites and online services

Credential Stuffing Turns One Breach Into Many

Attackers routinely combine multiple stealer log datasets to build comprehensive credential databases. The 1,518 records from this CyanoticCloud release are merged with other leaked datasets and fed into credential stuffing tools that systematically test each combination across popular platforms. Given that most users recycle the same password across services, a single valid entry can grant access to email, banking, shopping, and social media accounts simultaneously.

Inside the CyanoticCloud Operation

The repeated appearance of CyanoticCloud datasets on Telegram points to an organized infostealer operation. The threat actor likely distributes malware through multiple channels, including phishing campaigns, malicious advertisements, and trojanized software downloads. Once installed, the infostealer harvests browser-stored credentials, session cookies, and autofill information before exfiltrating the data. The compiled logs are then released in batches on Telegram, either for free distribution or as samples to attract paying customers for larger datasets.

Check If Your Credentials Were Exposed

HEROIC's breach intelligence database contains over 400 billion records from known breaches and stealer logs. Search for your email address using the HEROIC breach scanner to determine if your credentials appear in this CyanoticCloud release or any other compromised dataset. If found, update your passwords immediately and enable multi-factor authentication on all accounts to prevent unauthorized access.