In a major glitch hitting Microsoft Exchange Online, legitimate business emails are being wrongly tagged as phishing attempts. This service degradation, tracked as incident EX1227432, started on February 5, 2026, and has trapped valid messages in quarantine, blocking them from reaching inboxes. The problem stems from a new anti-spam rule designed to spot malicious URLs […] The post Microsoft Exchange Online Erroneously Flags Legitimate Emails as Phishing appeared first on Cyber Security News.