The Gmail.com Combolist Leaked in 2024. 423,754 Logins Just Surfaced.

The data behind this combolist traces back to August 16, 2024, but it only came to HEROIC analysts' attention recently when a Telegram user uploaded it to a public channel. The file is labeled "gmail.com" and contains 423,754 records, each pairing an email address with a plaintext password and the URL that login was used on. Why a Two-Year-Old List Is Still Dangerous Today A combolist does not expire just because time has passed. Passwords get reused for years, and many people never change a login unless they are forced to. With 423,754 plaintext password and email pairs in one file, an attacker has a large, ready-to-use target list, and because each entry includes the URL it was used on, there is no guesswork about which site or service to attack first. What Was Exposed Email addresses Plaintext passwords, stored in readable, unencrypted form URLs showing where each set of credentials was used Why This Matters for All 423,754 Accounts A file this large is built for scale. Attackers load lists like this into automated tools and run credential stuffing attacks, testing each email and password pair against banking sites, email providers, and social media platforms within minutes. If a password from this list is still in use anywhere, that account is exposed to takeover. From there, the risk extends to financial fraud and identity theft if the account holds any personal or payment information. How This Combolist Was Likely Built and Distributed Combolists like this one are usually assembled by pulling email and password pairs from older breaches, malware infections, or phishing hauls and combining them into one file, then organizing them by the site or service each pair logs into. A list this size sitting unnoticed for roughly two years before surfacing on Telegram is common. Sellers and distributors often hold onto data and recirculate it later once it has been repackaged, renamed, or bundled with newer material. Check If Your Email Was in This 423,754-Record Leak Given the age and size of this file, it is worth checking whether your credentials are included, even if you believe your passwords have since changed. HEROIC's free breach scanner checks your email against a database of more than 400 billion exposed records, including combolists like this one, so you can confirm your exposure and secure any account still using an old password.