Vidar Stealer Log Quietly Exposed 1,584 Login Records

The Quiet Vidar Leak Nobody Noticed Yet

HEROIC analysts identified a stealer log file named vidar_20260119, uploaded to a public Telegram channel on January 21, 2026. It has not made headlines, but it contains 1,584 records, each pairing an email address with a plaintext password and the URL the login was used on.

Why This Is Dangerous

Small, quiet leaks like this one are often more dangerous than big headline breaches, precisely because fewer people are watching for them. The credentials are just as real and just as usable, they simply have not attracted attention yet.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs showing which accounts the credentials unlock

Why This Matters

A quiet leak still enables the same attacks as a loud one: credential stuffing, account takeover, and identity theft. If anything, low-profile leaks like this one can sit unnoticed and unaddressed for longer, giving attackers more time to work through the list undisturbed.

How Vidar-Style Stealer Logs Work

Vidar is a known family of infostealer malware that infects devices and quietly copies saved browser passwords, cookies, and autofill data before sending it all back to the attacker. The naming convention here, vidar_20260119, points directly to that malware family and the date the resulting log surfaced.

Check If You Are Affected

Do not assume a quiet leak means you are safe. Use HEROIC's free breach scanner to check your email against this leak and more than 400 billion other exposed records in HEROIC's database.