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Security boffins warn flaw is now being used for ransomware attacks against live networks Microsoft says attackers have already compromised "several hundred machines across a diverse set of organizations" via the React2Shell flaw, using the access to execute code, deploy malware, and, in some cases, deliver ransomware.…

Don't get too comfortable: 'Line Dancer' malware may be targeting other vendors, too A previously unknown and "sophisticated" nation-state group compromised Cisco firewalls as early as November 2023 for espionage purposes — and possibly attacked network devices made by other vendors including Microsoft, according to warnings from the networking giant and three Western governments.…