In today's digital landscape, the need for comprehensive security measures is more critical than ever, as email continues to be a primary vector for cyberattacks such as phishing and malware. To addr...

We are excited to announce the GA release of auto-remediation of malicious messages through automated investigation and response (AIR) expanding this powerful tool and deliver on full end to end auto...

Security teams in both small and large organizations track key metrics to make critical security decisions and identify meaningful trends in their organizations. Defender for Office 365 has rich, bui...

Email security presents a complex challenge for individuals and organizations alike. Over the years, attackers have evolved from simple spam campaigns to sophisticated threats including ransomware, i...

The world is experiencing rapid changes, with artificial intelligence (AI) significantly transforming businesses and lifestyles. Additionally, it is impacting cybersecurity, as attackers leverage AI ...

We are pleased to announce that if you are using third-party report message solutions in Microsoft Outlook, such as Knowbe4, Hoxhunt, and Cofense, you can now configure Defender for Office 365 to aut...

April 29th Update - Changes have been made to the action take on messages that do not meet requirements, please see details below. Introduction In an era where email remains one of the most widel...

The rapid digital transformation of workplaces worldwide has not only expanded collaboration opportunities but has also introduced new attack surfaces that cybercriminals are eager to exploit. Micros...

In our ongoing commitment to enhance email security and protect our users from malicious activities, we are making changes in handling emails with non RFC-compliant  P2Sender addresses. This change r...

Outlook and Defender for Office 365 are excited to announce the release of built-in report button in Microsoft Outlook across platforms (web, new Outlook for Windows, classic Outlook for Windows, Out...