Security researchers have identified a sophisticated backdoor malware variant, PDFSIDER, that leverages DLL side-loading to evade endpoint detection and response (EDR) systems. The threat demonstrates advanced persistent threat (APT) tradecraft, combining evasion mechanisms with encrypted command-and-control capabilities to maintain covert access on compromised systems. PDFSIDER’s infection chain originates through spear-phishing campaigns delivering ZIP archives containing […]

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A sophisticated malware campaign has compromised users of Chrome, Firefox, and Edge by deploying 17 malicious extensions that employ advanced steganography techniques to evade detection. Collectively downloaded more than 840,000 times, the GhostPoster operation represents one of the most technically mature and persistent browser extension threats documented to date. The GhostPoster campaign leverages an uncommon […]

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