90k Valid Mail 30.08.24 Telegram Leak: Check Your Email

90k Valid Mail Stealer Log: 86,927 Records Uploaded to Telegram

On 01-Sep-2024, HEROIC analysts identified a stealer log dump titled "90k Valid Mail 30.08.24" circulating in a Telegram channel used to trade harvested credentials. The file contained 86,927 records, each pairing an email address with a plaintext password and the URL of the site the credentials were captured on. Unlike a typical corporate breach, this data was not stolen from one company. It was pulled directly off infected computers by malware and bundled for resale.

Why This Stealer Log Is Dangerous

Stealer logs are especially dangerous because they hand an attacker a working login, not just a stolen password sitting in a database somewhere. Each entry in this file shows exactly which website an email and password combination unlocks, so anyone who buys or downloads this log can try logging into that exact account immediately, no guessing required. Because the passwords were stored in plaintext, there is no encryption standing between the attacker and instant access.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the sites the credentials were used on

Why This Matters

If you reuse a password across multiple accounts, this leak puts every one of those accounts at risk through credential stuffing, where attackers automatically try the same email and password pair on banking sites, email providers, and social media. Because the URL is included, attackers do not even need to guess where to try it first. Anyone whose email shows up in this dump should assume that specific password is already compromised and treat the associated account as exposed.

How Stealer Logs Work

Stealer logs come from malware that quietly infects a victim's device, often through a fake download, cracked software, or malicious email attachment. Once installed, the malware scans the browser's saved logins, autofill data, and session cookies, then silently sends everything back to the attacker. The stolen credentials are packaged into a "log" file, like the one behind this leak, and sold or shared in dark web marketplaces and Telegram channels where other criminals purchase access in bulk.

Check If You Are Affected

The safest move is to find out directly rather than wait and wonder. 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, so you can see immediately if your credentials were exposed and know which passwords to change first.