The 112k Valid Breach Put 55,115 Stolen Email and Password Pairs Online

HEROIC analysts catalogued a stealer log dataset in August 2023 that was uploaded to a Telegram channel under the label "112k valid" -- a name indicating the file had been pre-filtered to include only confirmed active credentials. The dataset contained 55,115 records with email addresses, plaintext passwords, and URLs. The word "valid" in the filename is significant: it means someone already tested these credentials and confirmed they work, making this one of the more operationally useful stealer logs in circulation at the time of its release.

Why "Valid" Credentials Are More Dangerous Than a Raw Stealer Log

Most stealer logs contain a mix of active and stale credentials. The "112k valid" label indicates this file was curated -- invalid entries were stripped out before distribution. That means the 55,115 records remaining have already been verified to work on at least one service. An attacker purchasing or downloading this file is not working from a cold list. They are starting from credentials that are confirmed live. That dramatically reduces the effort required to take over accounts and increases the liklihood that any given login attempt will succeed.

What the 112k Valid Stealer Log Exposed

Each record in this pre-validated dataset contained:

• Email addresses (confirmed active login identifiers)
• Plaintext passwords (unencrypted, already verified to function)
• URLs (the specific services where each credential was confirmed valid)

Because the credentials were validated before distribution, victims in this dataset face heightened risk compared to those caught in unverified dumps. Their accounts were already tested -- and confirmed accessible -- before the log ever reached the public.

Why the 112k Valid Leak Creates Ongoing Risk for Every Account You Own

Validated credential sets like this one are particularly valuable for credential stuffing attacks because the failure rate is low. Attackers can move through accounts quickly, avoiding lockout triggers that would fire if they were using an unverified list with thousands of bad logins. Once inside one account, they look for opportunities to pivot: password reset emails, linked payment methods, saved addresses, and recovery codes. This is how a single verified credential expands into identity theft and finanical fraud. Datasets like this also get absorbed into larger combolists and resold for months or years after the original upload.

How Validated Stealer Logs Like 112k Valid Get Assembled

The creation process for a validated log has two stages. First, infostealer malware infects victim devices and harvests credentials from browsers, keystroke capture, and session tokens. Those raw logs are then run through a credential checker -- automated software that tests each login against real services to identify which ones still work. The verified entries are filtered out, organized by service or category, and repackaged for sale or distribution. The result is a high-quality dataset that requires less work for the buyer to exploit. The "112k valid" file represents the output of exactly this process, uploaded to Telegram where it was accessiblle to a large criminal audience.

See If Your Email Was in the 112k Valid Credential Dump

HEROIC's breach index contains over 400 billion compromised records, including validated stealer logs and pre-checked credential dumps like this one. You can search your email address for free to find out if your login appeared in the 112k valid dataset or any other archive in our database. If your credentials were included, change your passwords immediately -- starting with the accounts identified in the URL field -- and enable two-factor authentication on your email and banking accounts first. Validated leaks move fast once they circulate, so acting quickly matters.

Check your email for free using HEROIC's breach scanner to see if your credentials appeared in the 112k valid dump or any of the other 400B+ records we track.