Check Your Email Against the 3 Combolist’s 18,994 Leaked Logins

HEROIC's dark web monitoring turned up a Telegram combolist labeled "3" carrying 18,994 records dated 03 Aug 2020. Inside were email addresses matched to plaintext passwords, each with the URL the login belongs to. Anyone curious whether their own credentials made this list should check now rather than later.

Why this is dangerous

With almost 19,000 working credential pairs in plaintext, an attacker has everything needed to run automated login attempts against banking, email, and shopping sites without any extra effort. The file requires no technical skill to use, only a list of targets to try it against.

What was exposed

• Email addresses: the login identifier for each of the 18,994 records.
• Plaintext passwords: readable and immediately usable.
• URLs: the site tied to each set of credentials.

Why this matters

A discovery like this one usually means the file has already been circulating in private channels before it became visible to monitoring tools, so the exposure window may be longer than the posting date suggests. Reused passwords are what turns a single record here into access to several of your accounts at once.

How a combolist like this works

Combolists get built by merging credentials pulled from older leaks, phishing pages, and malware infections into one file, then checking a sample to confirm the logins still function before the rest gets shared. A short, generic name like "3" often just marks its place in a numbered series the same uploader keeps posting.

Want to know if you're one of the 18,994?

Scan your email to check it against this combolist and HEROIC's full breach records. If it's a match, change that password immediately and anywhere else you reused it, since automated tools will try it broadly. Check both your personal and work email addresses, since either could turn up in a file like this.