Inside Microsoft 68 Stealer Logs: 290 Passwords Harvested

HEROIC's threat intelligence team uncovered a stealer log collection labeled Microsoft 68 circulating on Telegram in May 2026. The dataset contains 290 records of credentials harvested by infostealer malware, each entry pairing an email address with its plaintext password and the URL of the targeted service.

Plaintext Passwords: No Cracking Required

Every password in the Microsoft 68 dump is stored in plaintext—exactly as the victim originally entered it. This eliminates the need for brute-force attacks or hash-cracking tools. An attacker with this file can copy and paste credentials directly into login pages, gaining instant access to affected accounts.

What Was Exposed

• Email Addresses — primary identifiers for online accounts and communication
• Plaintext Passwords — unencrypted, directly exploitable credentials
• URLs — the login endpoints where these credentials were captured

The Credential Stuffing Pipeline

Attackers rarely stop at the accounts listed in a single stealer log. The 290 email-password pairs from Microsoft 68 are fed into automated credential stuffing tools that test them against banking sites, email providers, e-commerce platforms, and social networks simultaneously. Because many users rely on the same password across multiple services, a single valid pair can cascade into dozens of compromised accounts.

How Infostealer Malware Harvests Your Data

The credentials in Microsoft 68 were collected by infostealer malware—a category of trojans designed to silently extract saved passwords from web browsers, autofill databases, and credential managers. Once installed on a victim's device, the malware operates in the background, compiling login data into structured log files. These files are then exfiltrated and traded on Telegram channels, making stolen credentials accessible to a broad audience of threat actors.

Check If Your Credentials Were Exposed

Determine whether your accounts were caught in the Microsoft 68 dump by scanning your email address through HEROIC's breach detection tool. With over 400 billion compromised records in its database, HEROIC can identify exposures across thousands of known breaches. If your credentials appear, update your passwords immediately and activate multi-factor authentication on all critical accounts.