While sending an email through the Outlook desktop app, if you see an error message saying Microsoft Outlook cannot sign or encrypt this message because there are no ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. First things first, although it is understandable to think ...

Microsoft is working to fix a DNS misconfiguration that is causing one-time passcode (OTP) message delivery failures in Exchange Online for some users. Recipients may receive a single-use access code ...

Microsoft says its Defender for Office 365 cloud-based email security suite will now automatically detect and block email bombing attacks. Defender for Office 365 (formerly known as Office 365 ...