Analysts Found the Mail Access Full Valid Dump: 9,381 Records

In early May 2026, HEROIC threat intelligence analysts found a stealer log circulating on Telegram labeled "Mail access Full Valid," containing 9,381 records. As with other "Full Valid" batches, the uploader claims each credential has been tested and confirmed to still work. The file includes email addresses, plaintext passwords, and the URLs of the login pages tied to each one.

Why a Pre-Verified Batch of 9,381 Logins Is a Bigger Threat

A raw, unverified credential list is often mostly useless, since many passwords are outdated by the time they leak. A batch labeled "Full Valid" removes that guesswork. It tells anyone who buys or downloads it that the accounts inside are confirmed working right now, which makes this kind of file far more valuable to criminals and far more dangerous to the people in it.

What Was Exposed in the Mail Access Log

• Email addresses
• Plaintext passwords
• URLs of the login pages tied to each credential

Why This Matters if You Use One Password Everywhere

Since the passwords in this file are plaintext and pre-verified, an attacker can log into an affected email account the moment they get the file. From there, they can reset passwords on other accounts linked to that inbox, a common path to full account takeover. If the same password is reused elsewhere, attackers will also try it against banking and shopping sites through credential stuffing, opening the door to financial fraud and identity theft.

How Criminals Verify Stealer Log Credentials Before Selling Them

After stealer malware harvests login data from an infected device, sellers frequently run automated checking tools against the actual login pages to confirm which credentials still work before listing them for sale. Batches marked "Full Valid," like this 9,381-record file, have already been through that process, meaning buyers are paying for a curated list of accounts they can access immediately rather than a random, untested dump.

Check If Your Login Was in This Verified Batch

Because this file has reportedly already been confirmed as working credentials, checking your exposure is especially worthwhile. HEROIC's free breach scanner searches more than 400 billion leaked records, including stealer logs like this one, so you can find out if your email was included and change any affected passwords right away.