Attackers Can Exploit 7 Million Logins From Stealthcloudinfo

HEROIC's threat research team identified stealthcloudinfo, a combolist shared on Telegram on August 6, 2026. The file contains 7,000,763 records pairing email addresses with plaintext passwords and the web addresses those credentials unlock.

Why This Is Dangerous

A combolist is a ready-to-use attack tool. Because the passwords are stored in plaintext and matched to a specific login URL, anyone who downloads this file can immediately try the credentials on the site they belong to, no cracking or guessing required. At 7 million records, attackers have enough volume to run automated login attempts against major platforms at massive scale, all in one pass.

What Was Exposed

Inside the Stealthcloudinfo File

• Email addresses
• Plaintext passwords
• The login URLs tied to each credential pair

Over 7 million records were bundled into this single file, making it one of the larger combolists processed by HEROIC's team this week.

Why This Matters

• Credential stuffing: Automated tools feed these exact email-and-password pairs into hundreds of websites at once, testing for reuse.
• Account takeover: A match on even one site can give an attacker full control of that account, including linked payment methods or personal data.
• Follow-on phishing: Exposed emails become targets for tailored phishing messages that reference real account details to appear legitimate.

How Combolist Attacks Work

Combolists are compiled, not stolen in a single hack. Criminals pull email-and-password pairs from older breaches, stealer log malware, and other leaked databases, then merge them into a single formatted list, usually a plain text file with each line reading something like email:password:url. Once assembled, lists like this are shared for free or sold in Telegram channels and dark web forums, where other attackers pick them up and run automated login attempts against email, banking, and shopping sites.

Check If You Are Affected

You don't have to guess whether your information is part of a leak like this one. HEROIC's free breach scanner checks your email address against a database of more than 400 billion compromised records, including combolists, stealer logs, and confirmed corporate breaches. If a match turns up, HEROIC will show you exactly what was exposed and walk you through the steps to secure your accounts.