M365 Security Shorts. M365 Security Shorts Part 6: Identifying Inactive Accounts Through Access Reviews M365 Security Shorts Part 5: Office 365 Message Encryption M365 Security Shorts Part 4: Block Legacy Authentication Through Conditional Access Policies M365 Security Shorts Part 3: Log Analytics & AAD Logs M365 Security Shorts Part 2: Alert Policies M365 Security Shorts Part 1: Content Search