Phishing, a deceptive cyberattack method, is leading Microsoft to implement rigorous email filtering queries. Recently, a new URL detection rule in Exchange Online has falsely classified legitimate emails as phishing due to heightened sensitivity. This has caused significant communication delays for organizations. Microsoft acknowledges that “some users'” emails are mistakenly quarantined and is working on unblocking them. IT administrators are urged to prepare contingency plans as the resolution timeline remains unclear.