Microsoft maintains a continuous effort to protect its platforms and customers from fraud and abuse. This edition of Cyber Signals takes you inside the work underway and important milestones achieved that protect customers.
Read about the initiatives Microsoft has undertaken over the past 18 months to support secure by design, secure by default, and secure in operations objectives as part of our SFI Initiative.
Microsoft Secure Score is important, but the increasing sophistication of security requirements has driven the development of more comprehensive security initiatives using Microsoft Security Exposure Management.
Register to attend one or all our Learn Live sessions to learn how to secure your environment for AI adoption.
For RSAC 2025, Microsoft Security is bringing an exciting lineup of sessions, expert panels, and exclusive networking opportunities to empower security professionals in the era of AI.
Microsoft Security Experts are now available to strengthen your team with managed security services. Learn how to defend against threats with security experts.
Exchange Server and SharePoint Server are business-critical assets and considered crown-jewels for many organizations, making them attractive targets for attacks. To help customers protect their environments and respond to these attacks, Exchange Server and SharePoint Server integrated Windows Antimalware Scan Interface (AMSI), providing an essential layer of protection by preventing harmful web requests from reaching backend endpoints. The blog outlines several attacks prevented by AMSI integration and highlights recent enhancements. The blog also provides protection and mitigation guidance and how defenders can respond.
Read how cyberattackers exploit domain controllers to gain privileged system access where they deploy ransomware that causes widespread damage and operational disruption.
Microsoft Threat Intelligence Center (MSTIC) and Microsoft Security Response Center (MSRC) have discovered post-compromise exploitation of a newly discovered zero-day vulnerability in the Windows Common Log File System (CLFS) against a small number of targets. Microsoft released security updates to address the vulnerability, tracked as CVE 2025-29824, on April 8, 2025.
Meet the minds behind how Microsoft prioritizes cybersecurity across every team and employee. Three deputy CISOs share their experiences in cybersecurity and how they are redefining protection.
Microsoft Sentinel is a cloud-native SIEM solution powered by AI and automation that delivers intelligent security analytics across your entire enterprise.
During the Tech Accelerator event on April 22, 2025, you will learn how to leverage Microsoft security guidance, products, and tooling throughout your cloud journey.
As Tax Day approaches in the United States on April 15, Microsoft has detected several tax-themed phishing campaigns employing various tactics. These campaigns use malicious hyperlinks and attachments to deliver credential phishing and malware including RaccoonO365, AHKBot, Latrodectus, BruteRatel C4 (BRc4), and Remcos.
Read how Microsoft’s unified security operations platform can use generative AI to transform cybersecurity for the public sector.
Using Microsoft Security Copilot to expedite the discovery process, Microsoft has uncovered several vulnerabilities in multiple open-source bootloaders impacting all operating systems relying on Unified Extensible Firmware Interface (UEFI) Secure Boot. Through a series of prompts, we identified and refined security issues, ultimately uncovering an exploitable integer overflow vulnerability in the GRUB2, U-boot, and Barebox bootloaders.
