CyanoticCloud Stealer Log Leak Exposes 1,257 Email Accounts

HEROIC analysts identified a dataset named "CyanoticCloud" after it was uploaded to a Telegram channel and logged on February 15, 2026. The file holds 1,257 records, each combining an email address, a plaintext password, and the URL of the login page where the credential was captured. It's a modest-sized file, but every record reflects a genuine account compromised through malware running on the victim's own machine.

Why the CyanoticCloud Leak Is Dangerous

Because the 1,257 passwords in this file sit in plain text, an attacker can use them the moment they get the file, no decryption needed. Paired with the exact URL each password was tied to, the leak effectively hands over a working login for each of the 1,257 accounts rather than a list of raw guesses.

What Was Exposed

• Email addresses
• Plaintext passwords
• Login URLs tied to each credential

Why This Matters

If any of the 1,257 people in this leak reused their email and password on other sites, banking, shopping, or social media included, this file could be the first step toward credential stuffing and account takeover well beyond the account it was originally stolen from. Small leaks like this one are frequently combined with other logs by attackers to build larger, more valuable combo lists.

How Stealer Logs Work

CyanoticCloud belongs to the category HEROIC classifies as a stealer log, meaning it was generated by malware running on an infected device rather than a breach of a company's servers. The malware, often bundled with pirated software or a fake installer, scans the victim's browser for saved logins and autofill data, then exports everything into a log file for the operator to package and distribute, in this case through a Telegram channel. Because the theft happens directly on the victim's device, the credentials captured tend to be current and accurate at the time of infection.

Check If You Are Affected

It's worth checking whether your email address shows up in the CyanoticCloud leak or any other exposed dataset. HEROIC's free breach scanner checks against a database of more than 400 billion breached records, stealer logs included, so you can find out in seconds and secure any accounts that need it.