What’s Included
Microsoft Defender for Office 365 Plan 1 offers core protection against email-borne threats. Key features include Safe Links, which protects users from malicious URLs, and Safe Attachments, which scans attachments for malware. Anti-phishing capabilities identify and block phishing emails, while real-time detections provide immediate protection against known threats. This plan provides a baseline level of security for email and collaboration platforms.
Australian Positioning
In AU mid-market organisations, Microsoft Defender for Office 365 Plan 1 is frequently included as part of a Microsoft 365 Business Premium licence. While it provides essential preventative controls aligning with the ACSC Essential Eight, particularly controls 3 and 8, it lacks advanced investigation and response capabilities found in Plan 2. Organisations requiring more in-depth post-delivery incident response, such as those subject to APRA CPS 234, should consider upgrading to Plan 2 to leverage features like Threat Explorer and Automated Investigation and Response.