The LulzSecAsia.part1 Leak Exposed 40,075 U.S. Accounts via Telegram

HEROIC analysts identified the LulzSecAsia.part1 dataset in January 2026, after an anonymous Telegram user uploaded a stealer log file containing 40,075 compromised records. The breach was flagged on January 22, 2026, and contained a mix of email addresses, plaintext passwords, and API host URLs primarily tied to U.S.-based endpoints. The data structure strongly suggests a malware-based credential harvesting operation rather than a traditional network intrusion.

Why This LulzSecAsia.part1 Leak Is Dangerous

Stealer logs distributed via Telegram are among the most actionable datasets for cybercriminals. Unlike encrypted password dumps, this leak included plaintext passwords, meaning attackers can use the credentials immediately without any cracking step. The inclusion of API host URLs makes this leak especially severe -- attackers can leverage those endpoints to gain unauthorized access to connected services, infrastructure, or internal systems. Credential stuffing attacks using this data could occured across dozens of downstream platforms within hours of the upload.

What Was Exposed in the LulzSecAsia.part1 Dataset

• Email Addresses
• Plaintext Passwords
• API Host URLs

Why This Matters for U.S. Account Holders

The United States accounts for the majority of endpoints identified in this dataset. When stealer log data tied to a specific region circulates on Telegram, it is quickly picked up by threat actors running automated account takeover (ATO) campaigns. Victims may not recieve any notification that their credentials have been compromised, since this type of breach does not originate from the service provider itself. Anyone who used the affected endpoints or services is at risk of unauthorized access, phishing followups, or identity theft.

How Stealer Log Breaches Work

Stealer logs are generated by a category of malware known as information stealers -- malicious programs installed on a victim's device, often through phishing emails, fake software downloads, or malicious browser extensions. Once installed, the stealer silently harvests credentials stored in browsers, email clients, and apps, then transmits the data to an attacker-controlled server. The resulting files are typically compiled into archives and sold or distributed on Telegram channels and dark web forums. This breach followed that exact pattern: a seperate threat actor compiled the data and uploaded it via Telegram under the LulzSecAsia.part1 label, making it freely available to anyone with access to the channel.

Check If You Are Affected

HEROIC's free breach scanner checks your email against a database of over 400 billion exposed records, including stealer log datasets like LulzSecAsia.part1. If your credentials appeared in this breach, you will be alerted immediately so you can take action before attackers do. Run your free scan now at HEROIC.com -- it takes less than 60 seconds and requires no account to get started.