If you suspect your data may be in a combo list, take these steps immediately: Learn more about Password Combo List notification
: Attackers prioritize popular services like PayPal and Amazon because they hold financial value. Download 400k premium combs txt
: Once a match is found, attackers can change recovery details to lock out the original owner. If you suspect your data may be in
While there are many such files, a significant recent incident involved a hacker claiming to have exfiltrated from the Belgian webshop Bol in April 2026. The phrase refers to a "combo list"—a text
The phrase refers to a "combo list"—a text file containing hundreds of thousands of stolen login credentials (email/username and password combinations) aggregated from multiple data breaches. These files are primary tools for credential stuffing attacks, where hackers use automated software to gain unauthorized access to accounts by exploiting the common habit of password reuse across different platforms. The "400k" Data Leak Context
In cybercriminal communities, "premium" often implies that the list has been "cleaned" or verified for higher success rates.
: Allegedly includes names, addresses, emails, phone numbers, and order histories.