Microsoft says that it has mitigated an Exchange Online outage affecting customers worldwide, which blocked their access to emails and calendars.

Microsoft is investigating a major security risk in Exchange Server hybrid deployments that could let attackers gain escalated access within connected Microsoft 365 cloud environments. The ...

Facepalm: Keylogging malware is a particularly dangerous threat, as it is typically designed to capture login credentials or other sensitive data from users. When you add a compromised Exchange server ...

Post 1Attackers are getting smarter at hiding in plain sight.Permiso researchers uncovered a new Unicode-based technique—dubbed Inboxfuscation—that manipulates Microsoft Exchange inbox rules to evade ...

Get the latest federal technology news delivered to your inbox. The Cybersecurity and Infrastructure Security Agency issued an emergency directive Thursday instructing agencies to take immediate ...