Ensure the Common Attachment Types Filter is enabled
Why This Matters
Malicious email attachments remain one of the most common vectors for delivering malware into your organization. By enabling the common attachment types filter, you block known dangerous file types such as executables and scripts before they reach end users. This reduces the risk of ransomware, trojans, and other malware infections spreading through email.
What Aether365 Checks
This check verifies that the Common Attachment Types Filter is enabled on your default anti-malware policy in Exchange Online. In the Aether365 dashboard, this appears under your Microsoft 365 checks and flags the policy as non-compliant if the filter is disabled.
How to Fix
Enable the Common Attachment Types Filter using either method below.