HEROIC Analysts Link 23,800 Logins to Vidar Part 1 Leak

HEROIC analysts linked 23,800 exposed records to a stealer log named Vidar Private 3 TG ArhontCorp.part1, uploaded to a Telegram channel on August 19, 2026. Each record contains an email address, a plaintext password, and the web address that password was used on, and scanning your email is the only way to know if you are one of the 23,800 people affected.

Why This Is Dangerous

Because none of the passwords in this file were hashed, they work exactly as typed, no cracking or guessing needed. This is the larger of two related parts HEROIC analysts reviewed, and a file of this size gives an attacker far more logins to run through automated checking tools in a single pass.

• Email addresses
• Plaintext passwords
• URLs tied to each saved login

A file this size increases the odds that at least some passwords are still active elsewhere. Attackers typically automate the process, feeding every email and password pair into scripts that quietly try each one against major email, banking, and shopping platforms until something works.

A stealer log like this one is produced by malware sitting on an infected computer, copying whatever logins the browser had saved along with the exact site each one belonged to. No company was broken into to produce this file; a single compromised device generated the whole set.

Check If You Are Among the 23,800

Scan your email to see if it appears in this file or in other known exposures, and if it does, change that password right away along with any other account still using it. This applies to personal email and work email alike.