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Hackers are exploiting a recently disclosed critical vulnerability (CVE-2026-48558) in SimpleHelp to deploy Djinn Stealer, a previously undocumented cross-platform information stealer targeting Windows, macOS, and Linux. [...]

The Russia-linked state-sponsored threat actor known as APT28 (aka UAC-0001) has been attributed to attacks exploiting a newly disclosed security flaw in Microsoft Office as part of a campaign codenamed Operation Neusploit

A newly disclosed security flaw in the Microsoft Defender SmartScreen has been exploited as a zero-day by an advanced persistent threat actor called Water Hydra (aka DarkCasino) targeting financial market traders