HEROIC Analysts Find 18,650 Leaked antares.com.br Passwords

HEROIC analysts uncovered a stealer log labeled "antares.com.br - 18.650 emails" being shared by a Telegram user. Dated 10-Jun-2026, the file contains 18,650 records: email addresses, plaintext passwords, and the antares.com.br URLs those credentials open.

Why This antares.com.br Leak Is Dangerous

What HEROIC's researchers found is a file where every password is already matched to the exact login page it opens, removing any guesswork for whoever picks it up. At over 18,000 records, the file is large enough that an attacker doesn't need to review it by hand, automated tools can work through the entire list and flag every login that still functions.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linked to each set of credentials

Why This Matters

Because the passwords are stored in plaintext, they work exactly as typed, with no cracking required. For the 18,650 people in this file, the immediate risk is account takeover on the accounts named in the leak. If any of these passwords were reused on other sites, that opens the door to credential stuffing against email, banking, or shopping accounts too, extending the damage well past the original leak.

How Stealer Logs Work

A stealer log is produced by malware that infects a device, quietly copies the usernames, passwords, and site addresses saved in the browser, and sends that data back to whoever controls the malware. Because a single infected device can hold logins for many unrelated accounts, a file like this one, spanning over 18,000 records, likely represents credentials pulled from a large number of separately infected computers. These logs are then shared or sold on platforms like Telegram, where anyone can pick them up and begin testing the credentials.

Check If You Are Affected

With 18,650 records in this one file, it's worth taking a moment to check your own exposure. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including stealer logs like this one, and tells you right away if you were caught up in it. If you were, changing that password and turning on two-factor authentication closes the door before anyone can use it against you.