Threat Advisory: How to respond to ProxyShell, the latest exploit against Exchange

During Black Hat 2021, a well-known computer security conference, security researcher Orange Tsai showcased a new exploit dubbed “ProxyShell” to remotely attack on-premise Microsoft Exchange servers. ProxyShell is a set of three security flaws (CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207) which, when used together, could enable a threat actor to perform unauthenticated, remote code execution (RCE) on […]