Topsec Best Practices for Outlook center on establishing a layered, zero-trust framework to shield Microsoft 365 environments from advanced email threats. Because native Microsoft Exchange Online Protection (EOP) and Defender ATP frequently miss highly targeted attacks and post-delivery poisoned links, integrating third-party solutions like Topsec Cloud Solutions ensures maximum organization safety. Implement a Layered Perimeter and Inline Security Posture
Route MX records through Topsec: Block spam, ransomware, and known malware at the inbound perimeter before malicious text hits your corporate infrastructure.
Deploy Topsec Inbox Protect: Scan your internal, east-west email traffic. Traditional email gateways only scan external traffic, leaving organizations highly vulnerable to internal credential-phishing and compromised employee accounts.
Enforce real-time URL rewriting: Restructure incoming web hyperlinks to analyze user destinations at the exact time-of-click rather than only upon arrival. Standardize Core Email Authentication Protocols
Organizations sending large volumes of outbound emails must implement and validate strict domain authentication to maintain high sender reputation and avoid automated spam blocklists: Topsec Cloud Solutions
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