HEROIC Analysts Found the 3100 noreplylinkedin.com Dump on Telegram

HEROIC analysts found a combolist labeled 3100 noreplylinkedin.com circulating after a Telegram user uploaded it on April 7, 2026. The file contains 3,027 records combining email addresses with plaintext passwords and the URLs those logins were tied to. The name suggests many of the entries are linked to LinkedIn notification addresses, a common target for combolist compilers because they are easy to harvest from phishing pages and inboxes.

Why This Is Dangerous

Plaintext passwords mean an attacker does not need to crack or decrypt anything before using the data. With 3,027 email and password pairs in hand, someone could run an automated script to test each combination against LinkedIn, other professional networks, and any other site where the same password might have been reused. A successful login gives the attacker the same access the real account owner has.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated URLs

Why This Matters

Professional network accounts like LinkedIn are valuable to attackers because they often connect to a person's real name, employer, and contact list, which makes them useful for targeted phishing and social engineering. For the 3,027 people in this combolist, the greater danger comes from password reuse: if the same login also unlocks a personal email account or a financial service, one leaked credential pair can open the door to identity theft or account takeover well beyond LinkedIn itself.

How Combolists Work

A combolist is a plain text file of login credentials, typically formatted as email:password, gathered from multiple sources like phishing campaigns, malware infections, or older breaches and then combined into a single file. Files like 3100 noreplylinkedin.com are traded on Telegram channels and forums where buyers test them against various websites to see which credentials still work. Because they are cheap to assemble and easy to share, combolists rarely stay contained to one channel for long.

Check If You Are Affected

To see whether your email address appears in this combolist or any other leaked data, run a free scan with HEROIC's breach checker. It searches a database of more than 400 billion compromised records, so you can quickly find out if a password you are currently using has already been exposed.