The 41_Boss Dump: 1,795 Stolen Login Credentials Hit the Dark Web

HEROIC's security researchers identified the 41_Boss stealer log on May 20, 2024. The log was uploaded to a public Telegram channel by a user identifying as "41_Boss" and contained 1,795 records. Each record included an email address, a plaintext password, and associated URLs captured from compromised devices. This type of data is a direct output of infostealer malware, which silently harvests credentials from infected endpoints and transmits them to threat actors.

Why the 41_Boss Breach Is Dangerous

What Was Exposed in the 41_Boss Stealer Log

• Email addresses
• Plaintext passwords
• URLs (targeted endpoints and services)

Why This 41_Boss Data Puts You at Risk

Plaintext passwords in a stealer log are ready to use immediately — no cracking required. Anyone who obtained this log can attempt to access the listed accounts right away. Even 1,795 records represent a significant number of individuals at risk of account takeover, financial fraud, and identity theft. If any of these passwords are reused across other services, the exposure extends far beyond the accounts visible in the log itself.

How Stealer Logs Work

Infostealer malware is typically delivered through phishing emails, cracked software, or malicious browser extensions. Once installed, it silently captures credentials stored in browsers, email clients, and applications. The stolen data is compiled into a log file and sent to a Telegram channel or dark web marketplace, where it is distributed freely or sold to cybercriminals who use it for account takeovers and further attacks.

Check If Your Data Was Exposed

HEROIC operates one of the world's largest breach databases, covering more than 400 billion leaked records. Use the free HEROIC breach scanner to instantly find out if your email address was exposed in the 41_Boss stealer log or any other known data breach — no account required.