The Telegram Stealer Dump: 18,450 Plaintext Passwords Hit the Dark Web

HEROIC analysts identified a stealer log file designated "SunCloudNew 1114 - 6200 LogsFile.part3" uploaded to a public Telegram channel on February 17, 2026. The file exposed 18,450 records containing plaintext passwords, email addresses, and API host URLs harvested from compromised endpoints. The presence of unencrypted credentials in a publicly accessible channel represents an immediate and severe threat to every affected user, as no technical skill is required to exploit plaintext login data.

Why This Stealer Log Is Dangerous

Stealer logs compiled from infostealer malware are among the most actionable data types circulating on dark web markets. Unlike hashed password dumps that require cracking, plaintext credentials can be plugged directly into credential stuffing tools and tested across hundreds of services in minutes. The inclusion of API host URLs in this dump is especially alarming -- attackers do not just recieve a username and password, they recieve a map showing exactly where to use them. This combination dramatically increases the likelihood of unauthorized access to cloud infrastructure, SaaS platforms, and backend systems.

What Was Exposed

• Email addresses
• Plaintext passwords
• API host URLs
• Endpoint identifiers

Why This Matters

The February 2026 Telegram stealer log upload is part of a broader wave of infostealer activity that has accelerated since late 2024. Threat intelligence from firms tracking RedLine, Raccoon, and Lumma stealer families confirm that log files are routinely compiled from thousands of seperate endpoint infections before being bundled and released publicly. When 18,450 records land on a Telegram channel accessible to anyone, the damage occured the moment the file was shared -- not when someone chooses to exploit it. Every affected user is at risk from the point of exposure forward.

How Stealer Log Breaches Work

Infostealer malware typically arrives via phishing emails, malicious software downloads, or compromised browser extensions. Once installed on a device, the malware silently harvests saved passwords from browsers, authenticator tokens, session cookies, and any credentials stored in configuration files. It then packages everything into a structured log file and exfiltrates it to an attacker-controlled server. These log files are later sorted, compiled into large collections, and distributed through Telegram channels or dark web forums -- sometimes sold, sometimes dropped for free to build reputation within criminal communities.

Check If You Are Affected

HEROIC's free scanner searches across more than 400 billion exposed records, including stealer log compilations like this one. If your email address, password, or API credentials appeared in the SunCloudNew Telegram dump, HEROIC will surface the exposure so you can act immediately. Run a free scan now to find out whether your data is already in circulation.