The Mate1 Breach: 23 Million Records Now Fuel Identity Theft Risk

HEROIC analysts identified a database breach tied to Mate1, an online dating platform, dating back to February 28, 2016. The exposed file, which continues to circulate on underground forums, contains 23,282,866 records: email addresses, usernames, and passwords stored in plain text. Mate1's own breach data has been flagged internally as sensitive, since dating profiles on the platform often included candid personal details users shared when signing up.

Why the Mate1 Breach Is Especially Dangerous

Two things make this breach worse than a typical credential leak. First, the passwords were never hashed or encrypted, so anyone who downloads the file has working logins ready to use immediately. Second, dating site accounts tend to hold more personal, private information than a typical retail account, which raises the stakes if the data is used for blackmail, harassment, or targeted scams rather than simple account takeover.

What Was Exposed in the Mate1 Breach

• Email addresses
• Usernames
• Passwords stored in plaintext

Why This Matters

Because the passwords in this breach are unencrypted and paired with real email addresses, they are directly usable in credential stuffing attacks, in which criminals try the same email and password combination across banking, email, and social media sites. Given the sensitive nature of a dating platform, exposed accounts also carry a heightened risk of targeted extortion attempts, where a criminal threatens to expose someone's dating activity unless paid. Anyone who signed up for Mate1 and reused that password elsewhere should treat every account using it as compromised.

How This Database Breach Happened

This incident has the profile of a direct database compromise, where an attacker gained access to Mate1's backend systems and extracted the full user table in one pass. Storing passwords in plaintext, rather than as properly hashed values, meant the data required zero cracking effort. That single decision turned what should have been a contained security incident into a fully weaponized credential list the moment it was stolen.

Check If You Are Affected

If you ever had a Mate1 account, or you reuse passwords across dating sites and other accounts, check whether your information is part of this or another breach. HEROIC's free breach scanner searches a database of more than 400 billion leaked records, so you can find out where your email address has been exposed and change any at-risk passwords immediately.