HEROIC Analysts Flag 1,002,723 Hotmail Logins Leaked Online

HEROIC analysts flagged a file simply named 1M Hotmail after it appeared on Telegram on 25-Jun-2025, and the number in the name turned out to be close: 1,002,723 individual records. This is one of the larger stealer logs the team has tracked recently, and its size alone puts a huge number of Hotmail users at risk.

Why This Is Dangerous

Over a million records in a single file means this isn't a niche event, it's a large-scale harvesting operation that likely pulled data from infected devices over an extended period. Every entry comes paired with a plaintext password, so there's no barrier stopping someone from trying each login the moment they open the file.

What Was Exposed

• 1,002,723 total records exposed
• Email Addresses (Hotmail-focused)
• Plaintext Passwords
• URLs tied to each account

Why This Matters

A dataset this large gets fed into automated tools within hours of release, tools that quietly try each email and password combination against dozens of popular sites. If you recieve a suspicious login alert in the coming weeks, a leak like this one is often the reason why.

How Stealer Logs Work

Files of this size usually aren't from one single victim, they're compiled from thousands of separate infostealer infections, each one silently copying saved browser credentials before sending them off to whoever controls the malware. Those individual harvests get merged into one massive combined log, wich is exactly how a file reaches over a million lines.

Check If You Are Affected

With over a million records involved, checking your exposure matters more than ever. HEROIC's free breach scanner searches more than 400 billion leaked records so you can find out imediately if your Hotmail account was part of this leak.