Using previously published Proxyshell vulnerability exploits, the Conti Ransomware group is hacking into Microsoft Exchange servers and compromising corporate networks. ProxyShell is a name for an exploit that uses three chained Microsoft Exchange vulnerabilities (CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207) to allow unauthenticated, remote code execution on susceptible servers that haven’t been patched. These three flaws were […]