Crossposted using Lemmit.

Original post from /r/sysadmin by /u/JiggityJoe1 on 2023-07-07 14:44:47+00:00.

A user just got a message in teams from someone impersonating our CEO asking for gift cards. They used the same name as CEO but random domain. We allow external communication to work with clients and never thought this was an issue until now. How are people resolving this? We are going to started needed a spam filter for teams like we do for email. Is there such a thing? Scray and crazy stuff.