Python Based XillenStealer Attacking Windows Users to Steal Sensitive Data

In recent weeks, cybersecurity researchers have observed the emergence of XillenStealer, a Python-based information stealer publicly hosted on GitHub and rapidly adopted by threat actors. First reported in mid-September 2025, the stealer leverages a user-friendly builder GUI to lower the bar for malicious deployment. Operators can configure exfiltration channels, such as a Telegram bot, and […]

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