Researchers Link the Combolistgold Dump to 29 Million Stolen Credentials on the Dark Web

HEROIC analysts identified Combolistgold as a large credential aggregation database that surfaced in November 2017, containing over 29 million records. Combolistgold was not a single website breach but rather a compiled collection of stolen login credentials assembled from multiple sources and distributed through hacking forums and dark web marketplaces. The full breakdown of data types was not published with the original listing, but databases of this nature partcularly tend to include email addresses and associated passwords drawn from earlier breaches and leaks.

How Compiled Credential Databases Fuel Large-Scale Account Attacks

Combolist databases like this one are designed specifically for credential stuffing. Attackers take the millions of email and password pairs and run them through automated tools that test those combinations against popular websites all at once. Even if only a small percentage of logins still work, on a database of 29 million records that translates to thousands of successful account takeovers. Banking portals, email providers, and e-commerce platforms are all common targets. The people whose credentials end up in these lists often have no idea their information is accessable to criminals in this way.

What Was Exposed in the Combolistgold Breach

• Compiled credential records from multiple breach sources
• Approximately 29 million total records
• Email addresses and associated passwords drawn from various breaches

Why a 29-Million-Record Credential Dump Still Poses a Threat

Combolist databases from 2017 have a long shelf life because password reuse is widespread. Criminals redistribute and resell these collections repeatedly, and each time they are repackaged they reach a new wave of attackers. If your email and password appeared in any of the source breaches that fed into Combolistgold, that information has likely been in criminal hands for years. Credential stuffing attacks, account takeover, identity theft, and financial fraud are all direct consequences of this kind of data circulating on underground markets. Beleiving you are safe simply because you do not recognize the source is a common and dangerous mistake.

How a Database Breach Works

A database breach happens when attackers gain unauthorized access to a stored collection of user data and copy it for distribution. In the case of compiled combolists like Combolistgold, the database is built by aggregating records stolen from multiple separate breaches into a single package. This makes it more valuable to attackers because it covers more users across more platforms. The compiled database is then posted to hacking forums or sold privately, where it is downloaded and used for automated login attacks against dozens of websites at a time.

Check If Your Data Was Exposed

HEROIC's free breach scanner covers more than 400 billion records from thousands of known data leaks including large compiled credential databases like Combolistgold. Enter your email address now to instantly find out whether your information has been exposed and take steps to protect your accounts before an attacker gets there first.