op.pl Breach: Emails & Passwords From 2024 Surface on Telegram

In December 2024, HEROIC analysts identified a stealer log tied to the domain op.pl that was uploaded to Telegram by an anonymous user. The file contained 1,045 records, including email addresses, plaintext passwords, and the URLs of the websites those credentials were used on. Because the log was posted openly on Telegram, anyone with access to that channel could have downloaded and used this data.

Why This Stealer Log Leak Is Dangerous

Stealer logs like this one are especially risky because they pair a person's email address directly with the plaintext password they used and the exact website the login belongs to. That combination gives an attacker a ready-made key: no guessing, no cracking, just a working username and password matched to a real login page. Anyone who obtains this file can attempt to sign in to those accounts immediately.

What Was Exposed

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

Why This Matters

Because the passwords in this log were stored and leaked in plaintext, they can be used the moment they're found, with no extra effort required. If any of the 1,045 people in this leak reused their password elsewhere, attackers can try the same email and password combination on email providers, banking sites, and social media through a technique called credential stuffing. That can quickly turn one leaked login into several compromised accounts.

How Stealer Logs Work

Stealer logs are created by malware that infects a person's computer and quietly collects saved passwords, autofill data, and browser session information, then sends everything back to the attacker in a single file. Unlike a traditional company data breach, a stealer log reflects whatever was saved in the victim's own browser at the time of infection, which is why the data is often already in plaintext and ready to use.

Check If You Are Affected

If you think your email or passwords could be part of this leak, you can find out for free. HEROIC's breach scanner checks your email against a database of more than 400 billion leaked records, including stealer logs like this one, and tells you instantly if your information has been exposed.