Phishing campaign leverages Microsoft 365 infrastructure for attacks

Recent research highlights a phishing campaign targeting Microsoft 365 users, exploiting tenant misconfigurations for account takeovers. Malicious actors manipulate Microsoft domains to conduct business email compromise (BEC) attacks, establishing administrative accounts and sending phishing emails that mimic legitimate communications. Security experts recommend adopting multi-layered messaging protection, including advanced phishing defenses and zero-trust principles, to protect against such sophisticated threats. Organizations are advised to continuously verify user communications and rectify vulnerabilities in their security posture to thwart these attacks effectively.

J Stephen Kowski emphasizes the need for organizations to adopt zero-trust principles when using Microsoft 365, advocating for continuous verification to prevent security gaps.

Malicious actors are leveraging legitimate Microsoft domains to exploit tenant misconfigurations, indicating a shift in tactics for business email compromise attacks.

Read at Securitymagazine