A Microsoft 365 email security-control bypass that lets attackers submit unauthenticated messages posing as internal users by leaving one SMTP field blank. The technique targets Exchange Online’s RejectDirectSend setting and does not represent a vulner…

Microsoft confirmed that some customers were unable to use multiple features of Microsoft Teams. However, the company reported that monitoring indicated the disruption was largely under control. In a customer update posted at 7:26 a.m. IST on August 26…

A cluster of fraudulent websites impersonating Microsoft is using fake “security scans” to pressure victims into uninstalling antivirus products, disclosing personal and banking information, and granting remote access to their computers. The sites, bra…

EvilTokens is pushing phishing-as-a-service beyond credential theft by abusing Microsoft’s device authorization flow to obtain valid Microsoft 365 tokens. Victims can complete a legitimate Microsoft sign-in and MFA challenge, yet unknowingly authorize …

Microsoft is introducing a new Microsoft Teams meeting policy that automatically blocks identified external bots. This aims to address growing concerns regarding unauthorized AI notetakers, transcription tools, and recording assistants that may enter s…

Threat actors are increasingly abusing Microsoft 365 identity sessions rather than deploying malware, as shown in a cloud-only business email compromise (BEC). The attackers used an adversary-in-the-middle (AiTM) phishing kit to capture an authenticate…