MAY 4 – 794 LOGS: 9,663 Stealer Log Credentials Leaked on Telegram

MAY 4 -- 794 LOGS: Batch-Labeled Stealer Data From September 2023

Stealer log files often arrive with internal naming conventions that reveal something about the actor who compiled them. "MAY 4 -- 794 LOGS" suggests a batch colection dated May 4 -- likely May 4, 2023 -- containing 794 individual log files compiled from as many infected devices. By September 2023, someone uploaded the compiled batch to Telegram, exposing 9,663 records containing email addresses, plaintext passwords, and endpoint URLs. The naming convention is a window into the operational workflow of infostealer actors: collect from infected endpoints, batch by date, upload when ready.

MAY 4 - 794 LOGS (September 2023): Breach Summary

• Records Exposed: 9,663
• Data Types: Email addresses, plaintext passwords, endpoint URLs, API hosts
• Breach Type: Stealer log
• Country Affected: United States
• Date Leaked: September 26, 2023

The Batch-and-Upload Model of Stealer Log Distribution

The "MAY 4 -- 794 LOGS" naming structure reveals a specific operational pattern: infostealer actors often don't upload immediately upon collection. They accumulate logs over days or weeks -- organizing them by collection date, log count, or campaign name -- before distributing them in bulk batches. This means the credentials in the September 26, 2023 upload were harvested from devices infected as far back as May 2023, a four-month window during which the victims had no way of knowing their credentials were already in the hands of a threat actor. The batch-and-hold approach also allows actors to aggregate sufficient volume before attempting bulk sale or distribution.

API Host URLs: The Enterprise Risk Inside Consumer Logs

At 9,663 records, this is a smaller batch compared to some stealer log compilations, but size is not the primary risk indicator for stealer logs. The presence of API host URLs means this isn't purely a consumer credential dump -- it contains whatever endpoints the aggergated infected users were accessing. If any of the 794 infected devices belonged to developers, engineers, or IT administrators, the log may contain credentials for code repositories, cloud management consoles, internal ticketing systems, or CI/CD pipelines. A single set of autorizated developer credentials in a 9,663-record dump can represent more risk than ten thousand consumer email accounts.

September 2023: Stealer Logs as the New Combolist

By September 2023, Telegram-distributed stealer logs had largely supplanted traditional breach combolists as the preferred format for credential sharing in underground communities. Unlike combolists, which aggregate credentials from multiple old breaches, stealer logs contain fresh credentials from recent infections -- making them immediately actionable. The "MAY 4 -- 794 LOGS" batch, uploaded just months after collection, represents this newer model: targeted, timely, and ready for immediate use in credential stuffing campaigns targeting any platform the victims' browsers had saved passwords for.

Check If Your Credentials Were Exposed

HEROIC's free breach scanner searches across more than 400 billion exposed records to tell you exactly which of your accounts have been compromised. Stealer log credentials require no cracking -- if your email appears in the MAY 4 - 794 LOGS batch, your passwords were served up in plaintext. Check now at HEROIC.com.