One Telegram File. 32,889 Records. The 2500_050126 Stealer Dump.

HEROIC analysts identified the "2500_050126" stealer log file uploaded to a public Telegram channel on January 10, 2026. The single file contained 32,889 records harvested from compromised endpoints, including plaintext passwords, email addresses, and associated URLs. The volume and structure of this dump indicate aggregated credential harvesting across a wide range of user devices, not a single-organization compromise. Every record in this file is immediately actionable -- plaintext credentials require no additional processing before being used in account takeover attempts.

Why This 2500_050126 Stealer Log Is Dangerous

The 2500_050126 designation points to a batch compilation -- 2,500 log entries dated January 5, 2026 -- a common packaging method used by infostealer operators to distribute harvested credentials in organized bundles. What makes this particularly alarming is that victims do not recieve any notification when their credentials land in one of these logs. By the time a log reaches Telegram, the data has already been aggregated, potentially reviewed by operators, and is now available to anyone who downloads the file. The inclusion of URLs alongside credentials means attackers know precisely where these passwords work, eliminating the guesswork from credential stuffing campaigns.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated URLs
• Endpoint identifiers

Why This Matters

Stealer log releases on Telegram have become a primary distribution channel for harvested credentials throughout 2025 and into 2026. The 2500_050126 log is not an isolated event -- it is part of a continuous stream of infostealer output that feeds credential stuffing infrastructure globally. When 32,889 records are exposed in a single upload, the blast radius extends far beyond the initial endpoints that were compromised. Password reuse means that one stolen credential can open accounts on dozens of platforms simultaneously, and the damage occured for victims the moment their device was infected -- not when the log was made public. The exposure of plaintext credentials in particular gives attackers seperate advantages at every stage of an attack chain.

How Stealer Log Breaches Work

Infostealer malware -- including RedLine, Vidar, Lumma, and Raccoon variants -- is typically delivered through phishing emails, malvertising, or trojanized software downloads. Once installed on an endpoint, the malware captures saved browser credentials, form autofill data, session cookies, and authentication tokens. This data is packaged into structured log files and transmitted to attacker-controlled infrastructure. Operators sort and batch these logs by date, volume, or geography, then release them on Telegram channels or dark web forums. The entire cycle from endpoint infection to public credential dump can complete within 24 to 48 hours of a successful infection.

Check If You Are Affected

HEROIC's free scanner searches more than 400 billion exposed records, including stealer log batches like the 2500_050126 Telegram dump. If your email or password appeared in this file, HEROIC will identify the exposure so you can act before attackers do. Run a free scan now to check your current exposure across all known breach data.