Microsoft has confirmed a known issue that prevents recipients from opening encrypted emails in classic Outlook.

Announcing Microsoft Defender Experts Suite, a integrated set of expert-led services that helps security teams keep pace with ...

Threat actors are abusing misconfigured MX records and weak DMARC/SPF policies to make phishing emails look internal, ...

Threat actors are exploiting complex routing scenarios and misconfigured spoof protections to send spoofed phishing emails, ...