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Threat Intelligence Report

LummaStealer Is Getting a Second Life Alongside CastleLoader

📅 February 22, 2026 📰 www.bitdefender.com 🔍 0 CVE(s) referenced

LummaStealer has resurged globally by leveraging the advanced, stealthy CastleLoader and deceptive social engineering lures—such as fake installers and ClickFix CAPTCHAs—enabling widespread credential theft and privacy breaches despite major law enforcement takedowns.

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