What We Know: 13,366 Logins Leaked for datatec.de_leakeddatabases.com

Here is what HEROIC analysts confirmed: a combolist labeled datatec.de_leakeddatabases.com surfaced on August 23, 2026, containing 13,366 records of email addresses, plaintext passwords, and the URLs those logins unlock. Scan your email to check whether your address is among the 13,366 listed.

Every password in this file is stored in plain text, meaning anyone who opens it can read each one instantly. There is no cracking step to slow an attacker down, which makes this file usable the moment it is downloaded.

The Data Fields in This File

• Email Addresses: Confirms a working account an attacker can target directly.
• Plaintext Passwords: Readable on sight, with no cracking required before use.
• URLs: Identifies the exact site each email and password pair logs into.

What 13,366 Exposed Logins Can Lead To

Because the file pairs each password with a site address, attackers can move quickly from one list to a specific login page. The larger risk, though, is reuse: if a listed password matches one used on an email or banking account, that account becomes exposed too, opening the door to account takeover or fraud. In many cases, attackers chain a single working login into access to other services tied to the same inbox, since password reset links and two factor codes often land right there.

How a File Like This Takes Shape

A combolist is created by collecting email and password pairs from scattered sources and organizing them into one file, often grouped by the site each pair is tied to. Once assembled, it is shared or sold so others can test the logins elsewhere. The file itself is typically organized so each line holds one email, its matching password, and the site it was collected for, making it simple for anyone to load the list into automated login tools.

What to Do About the datatec.de_leakeddatabases.com Exposure

Scan your email to check your exposure. If your address appears, change that password on every account where it was reused, starting with email and financial logins, and enable multi factor authentication where you can. This holds true whether the account involved is personal or tied to work.