The EU Combo Leak From 2024 Just Exposed 5,171 Accounts Online

In August 2024, a combolist file known as the "EU Combo" was uploaded to a Telegram channel used for trading stolen login credentials. HEROIC analysts identified 5,171 records in the file, each pairing an email address with a plaintext password and the website URL the credentials were used on.

Why This Is Dangerous

The passwords in this file were stored in plaintext, meaning they appear exactly as the original account holders typed them, with no encryption to break. Anyone who gets a copy of the EU Combo file can try these email and password pairs immediately, and because each record includes the URL where the credentials were used, attackers know exactly which site to target with each login attempt.

What Was Exposed

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

Why This Matters

Most people reuse the same password across several accounts, so a single leaked email and password pair rarely stays contained to one site. Criminals take lists like the EU Combo and run them against banking portals, email providers, and social media platforms in what's called credential stuffing, automatically testing the same login on hundreds of services at once. When a match hits, it can lead to account takeover, identity theft, or direct financial fraud.

How a Combolist Like the EU Combo Comes Together

A combolist isn't the product of one single hack. It's usually assembled by pulling email and password pairs from older breaches, malware infections, and other leaked sources, then compiling them into one file for easy resale or sharing. The "EU" in this file's name suggests whoever assembled it was organizing around European accounts, though HEROIC's records do not confirm a specific country for the people affected. Files like this circulate cheaply on Telegram and dark web marketplaces because even older, recycled credentials still work often enough to make them valuable to attackers.

Check If You Are Affected

If you think your email address could be part of the EU Combo leak, or any of the billions of other exposed records HEROIC tracks, run a free scan with HEROIC's breach checker. It searches a database of more than 400 billion leaked records to tell you if your information has surfaced in a known breach, so you can change passwords and secure your accounts before someone else uses them.