[MCAS] ALERT_ZOMBIE_USER

alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[MCAS] ALERT_ZOMBIE_USER"; content: "ALERT_ZOMBIE_USER"; content:!"
| 22
| Workload
| 22 3a 20 22
| Exchange
| 22
| "; content:"msg="; content:"cloudapps"; classtype:unsuccessful-user; reference: url,docs.microsoft.com/en-us/cloud-app-security/monitor-alerts; sid:5003813; rev:3;)