The 200k Dump Means Someone Could Already Be in Your Email Account

In June 2025, HEROIC analysts identified a large combolist known as 200k . m circulating on Telegram, containing 205,222 records of email addresses and plaintext passwords, along with the URLs tied to each account.

Why This Is Dangerous

With over 200,000 plaintext credentials in a single file, this combolist gives attackers a massive list of ready-to-use logins. Because each entry includes the URL it was pulled from, an attacker does not need to guess where to try a given email and password pair, they can go straight to the matching site.

What Was Exposed in the 200k . m Leak

• Email addresses
• Plaintext passwords
• Associated URLs

Why This Matters

A combolist of this size is built for scale, and scale is exactly what makes credential stuffing attacks effective. Automated tools can run all 205,222 credential pairs against dozens of websites within hours, and because so many people reuse passwords, even a small success rate can lead to widespread account takeover, identity theft, and financial fraud.

How a Combolist Like This Works

A file simply named for its size, like 200k . m, is typically assembled by combining smaller stolen credential sets into one large batch without much further sorting or verification. Sellers often name files this way, using a round number to advertise scale, to attract buyers on Telegram who are looking for volume rather than a specific target.

Check If You Are Affected

Given the scale of this leak, checking your exposure is a smart precaution. HEROIC's free breach scanner compares your email against a database of more than 400 billion leaked records to tell you immediately if your information has appeared in this or any other breach.