Dark Web Intel: 661 Credentials From the ‘valid’ Combolist

HEROIC's dark web monitoring identified a combolist simply named "valid," uploaded to a Telegram channel in August 2026. The name is a claim, not a guarantee, but the file itself contains 661 records pairing email addresses with plaintext passwords and their associated login URLs.

Why This Is Dangerous

Calling a combolist "valid" is a seller's way of promising buyers that the credentials have already been tested and confirmed to work. If accurate, every one of the 661 pairs in this file is a login an attacker could use right now, with no trial and error required.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated login URLs

Why This Matters

A "validated" combolist carries more immediate risk than an unverified one, since attackers don't need to waste time testing which entries still work. Anyone whose credentials appear in this file faces a higher chance of account takeover in the near term than if the data had simply been dumped without confirmation.

How Combolists Work

Combolists are assembled from stolen credentials gathered across multiple sources, older leaks, phishing, and stealer malware, then often checked against live login pages before sale to confirm which pairs still work. Files labeled "valid" have typically gone through that verification step, making them more valuable, and more dangerous, on underground markets.

Check If You Are Affected

Search your email address with HEROIC's free breach scanner, covering more than 400 billion leaked records, to check whether your credentials are part of this "valid" combolist or any other exposure.