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Ravie LakshmananApr 17, 2026Vulnerability / Endpoint Security Huntress is warning that threat actors are exploiting three recently disclosed security flaws in Microsoft Defender to gain elevated privileges in compromised systems. …

These new flaws underscore the reason why browser engines remain among the most attractive targets for attackers, noted Jack Bicer, director of vulnerability research at Action1. “With active exploitation already …

The company advises triaging logs with the ^(?!127\.0\.0\.1:\d+ .*$).*?\/mifs\/c\/(aft|app)store\/fob\/.*?404 regular expression and looking for HTTP 404 error response codes as well as GET requests with parameters that have bash commands. …