2,353 Passwords From the cossouq.com Dump Leaked Online

In September 2023, HEROIC analysts found a combolist named cossouq.com uploaded to a Telegram channel by an unverified user. The file contained 2,353 records, each pairing an email or username with a plaintext password linked to an associated URL.

Why Even a Small Combolist Like This Poses Real Risk

A smaller record count does not mean a smaller threat to the people in it. Each of these 2,353 entries pairs a working login with its plaintext password and the specific URL it was used on, giving an attacker everything needed to attempt an immediate login. For each individual affected, the risk is exactly the same as it would be in a much larger breach.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the associated login pages

Why This Matters

Anyone in this cossouq.com list who reused their password on other accounts is exposed to credential stuffing, where attackers automatically test the same email and password combination across many other websites. That single reused password can open the door to a hijacked email inbox, unauthorized purchases, or a broader identity theft case.

How the cossouq.com Combolist Was Compiled

A combolist like this one is built by gathering login credentials from various sources, including older breaches and stealer log infections, and organizing them into a single file, often labeled with the site or brand the credentials are associated with, in this case cossouq.com. These compiled lists are traded on Telegram and dark web forums specifically because they make it easy for attackers to test stolen logins in bulk.

Check If You Are Affected

Even a smaller breach like this one is worth checking. HEROIC's free dark web scanner searches more than 400 billion leaked records, so you can find out in seconds whether your email address turned up in the cossouq.com dump or any other breach.