All news with #secure email gateway tag
Wed, December 10, 2025
Transparent Email Security: New Microsoft Benchmarking
📊 Microsoft published its second email security benchmarking report comparing environments protected solely by Microsoft Defender to deployments using a Secure Email Gateway (SEG) in front of Defender and Integrated Cloud Email Security (ICES) layered after Defender. The updated methodology corrects for journaling and connector reinjection and now includes Defender's zero‑hour auto purge post‑delivery detections to avoid misattribution. Results show layering reduces marketing and bulk mail (avg 9.4%), while incremental gains for spam and malicious filtering remain modest. Post‑delivery remediation remains critical: Defender's zero‑hour auto purge removed 45% of malicious mail reaching inboxes on average, and ICES vendors accounted for an average 55% post‑delivery catch.