• Incident Response Blog: Exploitation of Microsoft Exchange Vulnerabilities

    During recent weeks, cybersecurity providers, businesses, governments, and other organizations have been responding to the publicization of four zero-day vulnerabilities affecting Microsoft Exchange Servers (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-27065). On March 2, Microsoft released emergency, out-of-band security updates to address these vulnerabilities, which affect a number of Microsoft Exchange product versions. Ongoing and escalating exploitation… View Article