Email Users Targeted in the New Valid Bigdatacomboo 5 Leak

On 12 June 2025, HEROIC analysts spotted a combolist titled "New Valid Bigdatacomboo 5" shared on Telegram. The file contained 102 records pairing email addresses with plaintext passwords and the URLs of the accounts they unlock.

Why This Is Dangerous

The word "Valid" in the file name signals that the seller claims these credentials were tested and confirmed working before the file was posted. Combined with plaintext passwords, this means an attacker can log in with the 102 credential pairs here without any extra effort.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs identifying the account each credential pair belongs to

Why This Matters

Everyday email users are the ones caught up in files like this, not a specific company or brand. If your email address happens to be among the 102 records here and you have reused that password elsewhere, an attacker already has a working key to try on your other accounts.

How Combolists Work

Files with names like "New Valid Bigdatacomboo" suggest they are part of a numbered series, meaning "5" here likely indicates several earlier versions were shared before this one. Combolist sellers often release these in batches to keep buyers coming back, pulling from ongoing breach and stealer log collections and repackaging them as "valid" or checked lists.

Check If You Are Affected

Run a free scan against HEROIC's database of more than 400 billion leaked records to check if your email appears in this combolist or any other exposure, and change any reused passwords right away.