Microsoft suggests ways to protect your users from recent spear phishing campaigns. Requests to train your users to identify when they’re being phished should be made to look for patterns in your email inboxes. Open source, community, or free solutions can be used to better protect your firm’s email servers and harden the operating system to be more resilient to attacks. Microsoft has suggested some of these recommendations were suggested by Microsoft in its latest security update on its security update for its security software.”]
Source: https://www.csoonline.com/article/3620868/4-steps-to-prevent-spear-phishing.html