Files_17.10_18.21_45’s 5,079,619 Logins Fuel Chained Attacks

One leaked password rarely stays contained to one account, and that's exactly the risk buried inside Files_17.10_18.21_45, a combolist of 5,079,619 stolen credentials that surfaced on Telegram in October 2024.

Why This Is Dangerous

The real danger of a combolist isn't just the first account it unlocks, it's the chain reaction that follows. Because so many people reuse the same password across multiple sites, one plaintext credential pulled from Files_17.10_18.21_45 can lead an attacker from a forgotten shopping account straight into an active email inbox, and from there into banking or work systems.

What Was Exposed

• 5,079,619 email addresses matched to stolen passwords
• Plaintext passwords with no encryption protecting them
• URLs revealing where each credential pair was originally used

Why This Matters

A chained attack starts small and grows fast. An attacker who gets into one email account using a password from this leak can request password resets on other services, seperate the victim from their own accounts, and lock them out entirely before they realize anything is wrong.

How One Leaked Password Becomes Many

Combolists like this one get built by merging data from multiple older breaches and infostealer output into a single file. Because the same person often reused a password across several of those original sources, one entry in Files_17.10_18.21_45 frequently maps to several real accounts at once, wich is exactly what makes chained account takeovers possible.

Check If You Are Affected

Breaking the chain starts with knowing where the first link is. HEROIC's free scanner checks your email against more than 400 billion leaked records, and if it turns up in Files_17.10_18.21_45 or any other breach, you'll garuntee yourself better odds by changing that password everywhere it's reused.