Since October 2024, Microsoft Defender Experts has observed and helped multiple customers address campaigns leveraging Node.js to deliver malware and other payloads that ultimately lead to information theft and data exfiltration. The post Threat actors misuse Node.js to deliver malware…
Category: Microsoft Security Blog
Transforming security with Microsoft Security Exposure Management initiatives
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. The post Transforming security with Microsoft Security Exposure Management initiatives appeared first on Microsoft…
Explore how to secure AI by attending our Learn Live Series
Register to attend one or all our Learn Live sessions to learn how to secure your environment for AI adoption. The post Explore how to secure AI by attending our Learn Live Series appeared first on Microsoft Security Blog. This…
The ultimate guide to Microsoft Security at RSAC 2025
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. The post The ultimate guide to Microsoft Security at RSAC 2025 appeared first…
Stopping attacks against on-premises Exchange Server and SharePoint Server with AMSI
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…
How cyberattackers exploit domain controllers using ransomware
Read how cyberattackers exploit domain controllers to gain privileged system access where they deploy ransomware that causes widespread damage and operational disruption. The post How cyberattackers exploit domain controllers using ransomware appeared first on Microsoft Security Blog. This article has…
Exploitation of CLFS zero-day leads to ransomware activity
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…
Meet the Deputy CISOs who help shape Microsoft’s approach to cybersecurity
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. The post Meet the Deputy CISOs who help shape Microsoft’s approach to cybersecurity…
Tech Accelerator: Azure security and AI adoption
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. The post Tech Accelerator: Azure security and AI adoption appeared first on Microsoft Security Blog.…
Threat actors leverage tax season to deploy tax-themed phishing campaigns
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…