Researchers Link the 391 PCS BR LOGS Dump to 6,579 Stolen Credentials on Telegram

HEROIC Analysts Detected 6,579 Stolen Records in the 391 PCS BR LOGS Stealer Log Upload

In August 2023, a Telegram user uploaded a stealer log package labeled 391 PCS - BR LOGS, exposing 6,579 records. HEROIC's DarkHive intelligence system captured and indexed this dataset as part of its ongoing monitoring of dark web and Telegram-based credential distribution. The exposed data includes email addresses, plaintext passwords, and URLs from the infected endpoints where the malware collected credentials.

The 391 PCS designation in the dataset name refers to the number of log files included in the upload, indicating a bulk collection from multiple compromised devices. The BR tag likely identifies the campaign or channel associated with this stealer log series.

Why Researchers Link BR LOGS Data to Widespread Credential Stuffing Operations

Stealer log packages labeled with campaign identifiers like BR LOGS are commonly associated with organized credential distribution networks on Telegram. These networks compile harvested malware output into numbered batches and release them to maximize criminal use. The 6,579 records in this upload represent individual device infections, each contributing a complete set of email, password, and URL data.

Security researchers tracking stealer log activity consistently find that datasets of this type are downloaded and weaponized rapidly after publication. The plaintext passwords require no decryption, and the URL data eliminates the need for attackers to guess which platforms to target for each victim. Every record is an immediately actionable credential stuffing attempt.

What Was Exposed in the 391 PCS BR LOGS Leak

• Email addresses (used as primary login identifiers across thousands of online services)
• Plaintext passwords (unencrypted, usable immediately without any technical processing)
• URLs (showing the exact services each victim was actively using when their device was infected)

The combination of these three data types is the definitive fingerprint of stealer log output. It contains everything needed for account takeover without any additional enrichment or processing on the attacker's side.

Why the 391 PCS BR LOGS Dataset Is a Direct Path to Account Takeover and Financial Fraud

Researchers link BR LOGS-style datasets to downstream fraud across multiple industries. When banking credentials are present in a stealer log, financial fraud follows. When email credentials are included, attackers gain access to password reset flows for every service linked to that inbox. When corporate credentials are harvested, the consequences extend to business systems and internal data.

The URL data in this collection confirms which types of services were accessed. Victims with work email addresses or financial service logins among their exposed URLs face the highest risk. Credential stuffing campaigns that use data like this can affect thousands of accounts within hours, occuring faster than most victims can respond even if they were immediatly notified.

How the 391 PCS BR LOGS Stealer Data Was Harvested and Released

BR LOGS-style datasets are produced by information-stealing malware that infects end-user devices through phishing, malicious downloads, and compromised software installers. Once active on a device, the malware reads saved credentials from browsers, captures active session tokens, and logs the URLs associated with authenticated sessions. All of this happens without the victim's awareness.

The harvested data is compressed into log files and uploaded to attacker infrastructure. Campaign operators then compile multiple log files into bulk packages like 391 PCS - BR LOGS and release them through Telegram channels. The 391 files in this package represent 391 individual devices that were compromised, each contributing its share of the 6,579 total records to this dataset.

Check If Your Data Appeared in the 391 PCS BR LOGS Breach

If your device has ever been infected with information-stealing malware, your email address and credentials could appear in the BR LOGS series or related collections. HEROIC's free breach scanner searches more than 400 billion records, including stealer log datasets indexed by the DarkHive system, to identify whether your information has been exposed.

Scan your email for free at HEROIC to find out if your data was included in 391 PCS - BR LOGS or any other breach dataset in the DarkHive database. Knowing your exposure status is the first and most important step in protecting your accounts from credential stuffing and account takeover attacks.