US 1.1 Stealer Log Leak: 9,946 Logins Exposed May 17, 2026

On May 17, 2026, a stealer log file labeled "us 1 1" appeared in a Telegram channel used for trading stolen data. Inside were 9,946 sets of login credentials, each one pairing an email address with a plaintext password and the exact web address where that password had been entered. Every day a file like this sits in an active Telegram channel, more people download it and start testing the logins, which means the window to act on this leak is already closing.

The Timeline Behind This Leak

A file this size does not appear overnight. It represents credentials pulled from thousands of devices infected with infostealer malware over time, then compiled and released together under a single batch name. Once uploaded to Telegram on May 17, the file became instantly accessible to everyone in the channel, and from that point forward, every hour that passes gives more people the chance to grab a copy and try the logins for themselves.

What Was Exposed

• Email addresses tied to 9,946 individual accounts
• Plaintext passwords for each account, stored with no encryption
• The specific login page URL tied to every credential pair

Why This Matters

Almost 10,000 credentials in one file makes this a prime target for credential stuffing, where attackers automatically test each email and password pair against banking sites, email providers, and shopping accounts. The longer a password stays unchanged after a leak like this, the higher the odds it gets tested somewhere that matters. That can mean account takeover, identity theft, or direct financial fraud, and it can happen fast once a log like this starts circulating.

How This Stealer Log Was Built

Credentials like these come from infostealer malware, malicious software that infects a device through a fake download, cracked software, or a malicious attachment. Once installed, it silently copies saved passwords and login sessions from the browser and sends them back to the attacker. Those stolen logins are batched together, numbered and labeled, such as "us 1 1," and shared or sold on Telegram channels and dark web forums, exactly what happened with this file.

Check If You Are Affected

With nearly 10,000 credentials in this leak, the odds that your email address is included are real, and the clock is already running. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked and stolen records, including stealer logs like this one. Run a free scan now before someone else tests your password first.