Hi, this is the part 2 of the New MS Exchange Attack Surface. Because this article refers to several architecture introductions and attack surface concepts in the previous article, you could find the first piece here: A New Attack Surface on MS Exchange Part 1 - ProxyLogon! This time, we will be introducing ProxyOracle. Compared with ProxyLogon, ProxyOracle is an interesting exploit with a different approach. By simply leading a user to visit a malicious link, ProxyOracle allows an attacker t...