The Xavier_Group Premium Part 1 Stealer Log Quietly Hit Telegram With 16,535 Records

HEROIC analysts identified the Xavier_Log 4140 Xavier_Group Premium Part 1 stealer log circulating via Telegram in March 2026. This is the first installment in a multi-part credential series distributed by the Xavier_Group operation. The file contained 16,535 records harvested from infected devices across the United States, with each record including an email address, a plaintext password, and the URL of the service that was accessed from the compromised machine.

Why This Is Dangerous

Part 1 of the Xavier_Group Premium series marks the beginning of what turned out to be a sustained, commercial credential distribution campaign. As the first batch in the series, these credentials were the freshest at the time of distribution, meaning many were still valid when they reached buyers. With 16,535 plaintext passwords and the associated service URLs, subscribers to this channel could begin credential stuffing attacks immediately after download.

What Was Exposed

The following data types were confirmed in the Xavier_Log 4140 Xavier_Group Premium Part 1 stealer log:

• Email addresses
• Plaintext passwords
• URLs (indicating which specific online services were accessed on infected devices)

Why This Matters

The 16,535 people included in this first batch of the Xavier_Group series face compounding risks. Their credentials were not just leaked once but distributed through a subscription model designed to reach as many buyers as possible. Each buyer represents another threat actor attempting logins, credential stuffing attacks, and account takeovers on banking platforms, email services, and social media. For anyone who reused their password across multiple accounts, the exposure multiplies. Identity theft and financial fraud become realistic outcomes when attackers have both the email address and the working password for a target.

How Xavier_Group Stealer Logs Are Distributed

The Xavier_Group Premium series operates as an organized criminal credential service. Infostealer malware is deployed through phishing campaigns and malicious downloads, infecting devices and harvesting credentials silently. The resulting log files are sorted, cleaned, and packaged into numbered installments sold through private Telegram channels. Part 1 is the entry point of this series, establishing the volume and quality of data that Xavier_Group subscribers would come to expect across subsequent parts. This business model incentivizes high-volume malware deployment and rapid distribution, putting victims at risk almost immediately after their device is infected.

Check If You Are Affected

If your email appeared in the Xavier_Group Premium Part 1 stealer log, your accounts may already have been targeted. HEROIC's free breach scanner searches more than 400 billion compromised records to tell you whether your data has surfaced in known breaches and leaks. Run a free scan now and find out exactly where your information has been exposed.