One Telegram Upload. The Austria Corp Mail Leak Had 1,092 Records.

In February 2026, HEROIC analysts traced a single Telegram upload labeled "AUSTRIA CORP-OTHERS-PRO MAILS TEST SAMPLE" back to a stealer log containing 1,092 records. Each record paired an email address with a plaintext password and the login URL it was used on.

Why This Is Dangerous

One upload was all it took to put 1,092 working email and password pairs into circulation. Every record already lists the exact site the password unlocks, so there is no cracking or guessing standing between an attacker and the account.

What Was Exposed

• Email addresses tied to the affected Austria Corp Mail accounts
• Plaintext passwords with no encryption
• Login URLs identifying exactly which site each password opens

Why This Matters

A single leaked file can ripple far beyond its original 1,092 accounts if passwords were reused. Attackers rely on credential stuffing to test the same login on other sites, which can lead to account takeover on services that had nothing to do with the original infection.

How the Austria Corp Mail Sample Was Built

Stealer malware infects a device, copies the passwords saved in the browser along with their matching URLs, and sends everything to whoever controls the malware. This "Austria Corp" sample is one such batch, pulled from that harvest and shared for other criminals to search on Telegram.

Check If You Are Affected

A single listing like this one can quietly expose over a thousand people. HEROIC's free breach scanner checks your email against more than 400 billion leaked records, so you can confirm in seconds whether you need to change a password.