10,546 U.S. Logins Leaked by the CloudLosPolos Telegram Stealer Network

At the end of March 2026, HEROIC's DarkHive analysts detected a stealer log posted through the LOS POLOS TG Telegram network under the filename CloudLosPolos. The file contained 10,546 records belonging to users in the United States, posted on March 31, 2026. Each record held an email address, a plaintext password, and the URL where those credentials were originally captured. The data was immediately accessible to any subscriber of the channel.

Act Fast: Plaintext Credentials Have a Very Short Exploitation Window

The moment a stealer log hits a Telegram channel, automated systems begin consuming it. Credential stuffing tools are designed to ingest exactly this format: email, password, URL. They start firing login attempts within minutes. With 10,546 records, there is significant volume for attackers to work with. Every record in this file represents a real person's working credentials, and every minute that passes after posting is another minute of active exploitation.

The inclusion of API host URLs is particularly dangerous for organizations. These are not just personal email accounts. They include credentials to services, platforms, and internal systems. A single compromised credential here can give an attacker access to cloud infrastructure, corporate email, or business-critical applications.

What the CloudLosPolos File Contains

• Email addresses tied to personal and business accounts in the United States
• Plaintext passwords requiring zero processing before use
• URLs and API endpoints revealing which specific services were compromised

The LOS POLOS TG Network and How It Operates

LOS POLOS TG is a Telegram-based distribution channel associated with stealer log activity. Channels like this serve as both distribution points and marketplaces, posting credential logs publicly to build reputation and attract buyers for larger datasets. The public posts are not random acts of disclosure. They are calculated moves to demonstrate the quality of the data.

This operational model means the CloudLosPolos log was almost certainly reviewed before posting. The records in it were considered reliable and usable by the people who put them there. Threat actors subscribed to these channels treat public stealer logs as immediately actionable intelligence.

How Infostealer Malware Produces Files Like CloudLosPolos

Every record in this file started with a compromised device. Infostealer malware reaches endpoints through phishing messages, bundled software installers, and malicious browser extensions. After installation, it silently harvests saved credentials from every browser profile on the machine, extracts active session cookies, and pulls stored application passwords. The results are formatted and transmitted to a collection server linked to the Telegram channel.

Victims experience nothing noticeable. No slowdown, no error messages, no obvious sign. The compromise is complete and the data is on its way to Telegram before most people finish the cup of coffee they were drinking when they clicked the wrong link.

If Your Email Is in This File, Your Password Is Already Out There

HEROIC's free breach scanner checks your email address against more than 400 billion exposed records, including the CloudLosPolos stealer log. It takes seconds. If you appear in this dataset, you will see it right away, and you can start resetting credentials before any further damage is done.

Do not wait for an account lockout or a fraud alert to tell you what a breach scan can tell you right now.

Scan your email free at HEROIC.com.