The 4.6K CHINA Leak Is Small, but 4,666 Passwords Are Now Exposed

In May 2026, HEROIC's threat intelligence analysts found a small but potent combolist uploaded to Telegram by an anonymous user, tracked as "4.6K CHINA uploaded by a Telegram User." The file contains 4,666 records pairing email addresses with plaintext passwords, along with the URLs of the sites those logins belong to.

Why This Is Dangerous

Size is not the same as severity. Every one of the 4,666 credential pairs in this file is stored in plaintext, meaning there is no password hash for an attacker to crack. Combined with the URL of the login page each credential belongs to, this list hands an attacker a ready-made set of working logins they can try immediately, no technical skill required.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linked to each credential pair

Why This Matters

A list of only 4,666 records is still large enough to power a focused credential stuffing run. If any of your accounts show up here and you have reused that password elsewhere, an attacker could log in as you on other services, taking over email accounts, financial logins, or social media profiles. From there, identity theft and financial fraud become real possibilities.

How Combolist Leaks Work

A combolist bundles email and password combinations, usually formatted as email:password, into a single file that attackers can feed straight into automated login tools. These lists are often pulled together from older breaches or credential harvesting activity and then shared on channels like Telegram. Their small size can make them easy to overlook, but that same size makes them fast and simple for an attacker to test against dozens of websites in minutes.

Check If You Are Affected

Don't assume a small leak means low risk. Run your email address through HEROIC's free breach scanner to check it against more than 400 billion exposed records, including this one, and find out if it's time to change a password before someone else uses it first.