A Telegram Stealer Log Exposed 428,621 Login Credentials

A stealer log titled "mix 04.07 1271" was uploaded to Telegram in July 2025, and it contains 428,621 exposed login credentials. That's the plain version of the story. No dramatic buildup needed, just a straightforward fact: nearly half a million email and password combinations are now floating around on the dark web, free for anyone to download.

Why This Is Dangerous

A file this size gives attackers a huge testing ground. They load the list into automated tools and let the software try each pair against dozens of sites, banking, email, shopping, social media, without lifting a finger themselves. Thier goal isn't to target you specifically, it's to see who happens to still be using the same password.

What Was Exposed

• Email addresses tied to real accounts
• Plaintext passwords with no encryption
• URLs pointing to the exact services affected
• 428,621 total credentials exposed in this leak

Why This Matters

A leak this large definately increases the odds that your own credentials are somewhere inside it, simply because of scale. And since password reuse is common, one exposed login here could open the door to several other accounts you use every day. The damage doesn't stop where the leak occured, it spreads outward from there.

How Stealer Logs Work

Stealer malware sits quietly on an infected device, pulling saved usernames and passwords straight out of the browser's storage. Once collected, the data gets bundled into a file like "mix 04.07 1271" and uploaded to a Telegram channel where it can be downloaded, traded, or sold to other criminals looking for fresh credentials to exploit.

Check If You Are Affected

Checking your exposure takes less time than reading this article. HEROIC's free breach scanner searches a database of more than 400 billion leaked records, including this leak, so you can see instantly whether your email and password showed up. If they did, change the password now and turn on two-factor authentication wherever it's offered.