Your Login May Be Compromised. CuckooLogsPublic Leaked 5,545 Records.

HEROIC analysts identified a stealer log file named CuckooLogsPublic-20250525, uploaded to a public Telegram channel on May 25, 2025. The file contains 5,545 records, each pairing an email address with a plaintext password and the URL of the site or API endpoint the credential was used on. This data was harvested directly from infected devices rather than stolen from a single company's database.

Why This Is Dangerous

Because these passwords were captured in plaintext straight from an infected computer, there is no hashing or encryption standing between an attacker and a working login. Each record also lists the exact URL the credential belongs to, meaning an attacker knows precisely which service to log into rather than having to guess or test the password elsewhere first.

What Was Exposed in the CuckooLogsPublic Stealer Log

• Email addresses
• Plaintext passwords
• Associated login URLs

Why This Matters

With each password matched to the specific site it unlocks, attackers can move directly into banking portals, email accounts, or work logins without any trial and error. That precision raises the risk of account takeover, identity theft, and financial fraud for anyone whose credentials appear among these 5,545 records, particularly since the data was already usable the moment it was uploaded.

How This Stealer Log Was Created

A stealer log comes from information-stealing malware that infects a device, often through a malicious download, cracked software, or a phishing link. Once active, the malware quietly collects saved browser passwords, autofill data, and session details, then organizes everything into a log file sorted by the site or service each credential belongs to. That log is then uploaded and shared, in this case through a channel labeled Upload by LOGSYNC on Telegram, where other criminals can sort through it for accounts worth targeting.

Check If You Are Affected

Because stealer log data comes from an infected device rather than a single named company, you do not need to recognize this incident by name to be at risk. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including this one, so you can find out what has been exposed and secure your accounts before someone else uses this data against you.