Stealer Logs Explained: 178,617 Records Leaked From ‘mansory 16’

On December 8, 2025, HEROIC analysts recovered a stealer log uploaded to Telegram under the label "mansory 16," containing 178,617 records. Each record pairs an email address with a plaintext password and the URL that login was used on. Unlike a breach of a single company, this data was harvested from many individual devices already infected with information-stealing malware, then compiled into one large file and shared publicly.

Why This Is Dangerous

At 178,617 records, this file gives whoever downloads it an enormous, ready-to-use list of working credentials. Because the passwords are stored in plaintext, there is no cracking step involved, anyone with the file can start testing logins immediately.

What Was Exposed

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

Why This Matters

A leak of this scale fuels large-scale credential stuffing campaigns, where automated tools test each of the 178,617 email and password combinations against banking, email, and shopping platforms. Anyone whose password was reused elsewhere is at risk of account takeover, and a compromised email account can be used to reset passwords on other services, spreading the damage further.

How Stealer Logs Work

A stealer log is created when malware, often delivered through a malicious download, cracked software, or phishing link, infects a device and quietly copies every password, cookie, and autofill entry saved in the browser. That stolen information is sent back to whoever controls the malware, who compiles it into a single file like this 178,617-record dataset. From there, it can be sold on criminal marketplaces or, as with the file labeled "mansory 16," distributed for free on platforms like Telegram, where anyone can download it. Because the malware captures whatever the browser has saved, one infected device can contribute logins for dozens of unrelated websites to a single log file.

Check If You Are Affected

With a leak this large, checking your own exposure directly is the most reliable way to know where you stand. HEROIC's free breach scanner searches a database of more than 400 billion exposed records, including stealer logs like this one, so you can confirm your status in seconds and change any password that turns up.