passagen.se Stealer Log Exposed Exactly 1,225 Passwords

In June 2026, HEROIC analysts found a stealer log tied to passagen.se uploaded to Telegram by a threat actor. The file contained exactly 1,225 records made up of email addresses, plaintext passwords, and the URLs those credentials were used on.

Why This passagen.se Stealer Log Is Dangerous

Even at this modest size, the leak is fully usable right out of the box. The passwords are stored in plaintext and matched directly to the exact web address each one unlocks, so an attacker does not need to crack or guess anything before trying to log in.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linked to each set of credentials

Why This Matters

Because each password is matched to the specific site it opens, attackers can move straight to account takeover on the 1,225 accounts in this log. If any of these passwords were reused elsewhere, such as on email, banking, or shopping accounts, credential stuffing tools let attackers test the same password across many unrelated services, turning a small leak into a much wider problem.

How Stealer Logs Work

Stealer logs are created by malware that infects a device and quietly copies saved browser passwords, autofill data, and the web addresses tied to them, then sends everything back to the attacker. Because the theft happens on the victim's own computer rather than through a hacked company server, the credentials inside are often still valid when the log surfaces on Telegram.

Check If You Are Affected

Want to know if your email or password showed up in this stealer log or another one like it? HEROIC's free breach scanner checks your details against a database of more than 400 billion leaked records, so you can find out quickly and update any exposed passwords.