222,522 Passwords and Emails Exposed in the _Kassy_ru_2025__ Leak

HEROIC analysts found a combolist file named _Kassy_ru_2025__ circulating in a Telegram channel on August 23, 2026. The file contains 222,522 records pairing email addresses with plaintext passwords and the web addresses (URLs) those credentials unlock. If you want to know whether your address is in this file or any other leak HEROIC has indexed, scan your email now.

Every password in this list is stored in plain, readable text, so no cracking is required before someone can try to use it. Paired with the matching URL, an attacker knows exactly which site a given password was meant to unlock, which makes a successful login on the first try far more likely than with a random guess.

Records Inside This List

• Email Addresses: lets an attacker identify who owns an account and target it directly with phishing or login attempts.
• Plaintext Password: immediately usable, letting anyone who has the file log in without cracking anything.
• URLs: shows which specific site or service each password was used on, speeding up account takeover.

Credential Stuffing and Account Takeover

With a working email, password, and destination site all in one row, an attacker can automate login attempts across thousands of accounts in minutes. Anyone who reused this exact password elsewhere, on banking, email, or work logins, is exposed well beyond the original site tied to this file.

Where Files Like This Come From

A combolist is built by gathering email and password pairs from many smaller sources, often stealer logs or older leaks, and combining them into one organized file so it can be tested against other websites in bulk. It is not necessarily proof any single company was breached; it is a collection tool built for reuse.

If You Find Yourself in the _Kassy_ru_2025__ File

Start by using the link to scan your email and see which of your accounts may be affected. Change the password on any account where you reused this exact password, and do it from a device you trust. This applies equally to personal inboxes and work email accounts, since both show up in files like this one.