These individual leaks were eventually sold to "middlemen" who merged them into larger distributions, like this 2M version, to increase the likelihood of success.
Attackers first targeted obscure forums and small-scale crypto tools where security was an afterthought. 2M COMBOLIST CRYPTO.txt
Even if a user changed their password on one site, "old passwords" found in these combolists often remain dangerous if variants of them are still used elsewhere. Protecting Your Digital Fortune These individual leaks were eventually sold to "middlemen"
Use physical security keys (like YubiKeys) for crypto accounts to prevent unauthorized access even if your password is stolen. Protecting Your Digital Fortune Use physical security keys
Someone who signed up for a crypto news site in 2021 using their primary email and a weak password. Years later, that same password is used to drain their actual wallet because they didn't enable Multi-Factor Authentication (MFA) .
To ensure your name never ends up in a file like this, cybersecurity experts from sources like Aura and SpyCloud recommend:
The file was born from a "Compilation of Multiple Breaches" (COMBO), a massive aggregation of leaked credentials from hundreds of minor crypto exchanges, NFT marketplaces, and DeFi platforms. It contains , each formatted as a simple email:password pair, stripped of the original websites they once secured. The Lifecycle of a Breach The story of this specific list began years ago: