CuckooLogsPublic-20251211 Breach: US Users Exposed in 2025 Stealer Log

In December 2025, a Telegram user made public a stealer log file labeled CuckooLogsPublic-20251211, exposing 14,588 records. The data included email addresses, plaintext passwords, and URLs, with affected users primarily based in the United States. This breach is among the more recent stealer log exposures and represents an active, ongoing threat to anyone in the dump.

Why This Is Dangerous

Because this breach occured in late 2025 and was made public shortly after, the credentials are fresh. Attackers prize recent stealer logs because users are less likely to have changed their passwords yet. The combination of plaintext passwords and the associated URLs gives criminals a ready-made list of which services to attack, without any guesswork required.

What Was Exposed in the CuckooLogsPublic-20251211 Breach

• Email addresses
• Plaintext passwords (no protection applied, usable as-is)
• URLs (mapping which websites and online services the affected users were accessing)

Why the CuckooLogsPublic-20251211 Data Puts You at Risk

Stealer logs made public on Telegram are available to thousands of bad actors at once. Unlike breaches that are sold privately, public dumps mean the credential stuffing campaigns start immediately and come from many directions at the same time. US-based users face particular exposure because American accounts are high-value targets for fraud, identity theft, and financial account takeover. If your email and password are in this file and you use the same password elsewhere, your other accounts are at risk right now.

How Stealer Log Attacks Work

The malware behind stealer logs, commonly called infostealers, is widely available for purchase on criminal marketplaces. An attacker buys or rents the tool, sets up a distribution campaign, and waits for infections to return credential logs. The malware infects devices through phishing emails, malicious advertisements, or fake software downloads. Once on a machine it silently collects browser-saved passwords, cookies, and login data from applications. The harvested data is then packaged and uploaded to a server or shared directly on Telegram. In the case of CuckooLogsPublic-20251211, the logs were deliberatly made available to the public rather than kept private, maximizing exposure.

Check Whether Your Data Was in the CuckooLogsPublic-20251211 Leak

HEROIC's free breach scanner covers more than 400 billion exposed records, including this recent US-focused stealer log dump. Enter your email to find out if you were caught in this breach or any other known exposure. Given how recent this leak is, checking now and changing passwords immediately is the most important step you can take.