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Phishing actors exploit complex routing and misconfigurations to spoof domains
Phishing actors are exploiting complex routing scenarios and misconfigured spoof protections to effectively spoof organizations’ domains and deliver phishing emails that appear, superficially, to have been sent internally. Threat actors have leveraged this vector to deliver a wide variety of...
Defending against the CVE-2025-55182 (React2Shell) vulnerability in React Server Components
CVE-2025-55182 also referred to as React2Shell and includes CVE-2025-66478, which was merged into it is a critical pre-authentication remote code execution RCE vulnerability affecting React Server Components, Next.js, and related frameworks. With a CVSS score of 10.0, this vulnerability could all...
Investigating active exploitation of CVE-2025-10035 GoAnywhere Managed File Transfer vulnerability
On September 18, 2025, Fortra published a security advisory regarding a critical deserialization vulnerability in GoAnywhere MFT's License Servlet, which is tracked as CVE-2025-10035 and has a CVSS score of 10.0. The vulnerability could allow a threat actor with a validly forged license response...
AI vs. AI: Detecting an AI-obfuscated phishing campaign
Microsoft Threat Intelligence recently detected and blocked a credential phishing campaign that likely used AI-generated code to obfuscate its payload and evade traditional defenses. Appearing to be aided by a large language model LLM, the activity obfuscated its behavior within an SVG file,...
Microsoft Named a Leader in the 2025 IDC CNAPP MarketScape: Key Takeaways for Security Buyers
The cloud-native application protection platform CNAPP market continues to evolve rapidly as organizations look to secure increasingly complex cloud environments. In the recently published 2025 IDC MarketScape for Worldwide CNAPP, Microsoft has been recognized as a Leader, reaffirming its...
“Dirty stream” attack: Discovering and mitigating a common vulnerability pattern in Android apps
Microsoft discovered a path traversal-affiliated vulnerability pattern in multiple popular Android applications that could enable a malicious application to overwrite files in the vulnerable application’s home directory. The implications of this vulnerability pattern include arbitrary code...
Flax Typhoon using legitimate software to quietly access Taiwanese organizations
Summary Microsoft has identified a nation-state activity group tracked as Flax Typhoon, based in China, that is targeting dozens of organizations in Taiwan with the likely intention of performing espionage. Flax Typhoon gains and maintains long-term access to Taiwanese organizations networks with...
Cyber Signals: Shifting tactics fuel surge in business email compromise
Today we released the fourth edition of Cyber Signals highlighting a surge in cybercriminal activity around business email compromise BEC. Microsoft has observed a 38 percent increase in cybercrime as a service CaaS targeting business email between 2019 and 2022.1 Successful BEC attacks cost...
LinkedIn and Microsoft Entra introduce a new way to verify your workplace
In the digital world, when you meet professional contacts for the first time online, you need additional trust signals to increase your confidence that they are who they say they are. We’re thrilled to announce that millions of LinkedIn members will be able to verify their place of work with a...
Secure your endpoints with Transparity and Microsoft
This blog post is part of the Microsoft Intelligent Security Association guest blog series. Learn more about MISA. Endpoint protection platforms EPPs are dead and no longer sufficient to protect your organization, right? Wrong. When it comes to cybersecurity, the ability to normalize and correlat...
Do more with less—Discover the latest Microsoft Entra innovations
It has certainly been another intense year. From the ongoing pandemic to the Great Reshuffle to economic uncertainty, it’s truly felt like the only constant is change.1 In this economy, many organizations are looking for efficiencies. This is putting pressure on security teams, along with everyon...
CSO perspective: Why a strong IAM strategy is key to an organization’s cybersecurity approach
The security community is continuously changing, growing, and learning from each other to better position the world against cyberthreats. In the latest post of our Community Voices blog series, Microsoft Security Senior Product Marketing Manager Brooke Lynn Weenig talks with Alissa “Dr. Jay”...
Implementing a Zero Trust strategy after compromise recovery
What changes after compromise recovery? After a successful compromise recovery effort, you are back in control. Likely, you gave your team a round of applause and took a sigh of relief. Now what? Is everything going back to as it was in the past? Absolutely not! A compromise recovery engagement i...
KuppingerCole rates Microsoft as outstanding in functionality for secure collaboration
We are excited to share that Microsoft has been rated "Outstanding in Functionality" in the KuppingerCole Market Compass for Secure Collaboration, May 2022. Microsoft was also the only company to be awarded the highest possible score of "Strong Positive" in all five categories: security,...
New security features for Windows 11 will help protect hybrid work
Attackers haven’t wasted any time capitalizing on the rapid move to hybrid work. Every day cybercriminals and nation-states alike have improved their targeting, speed, and accuracy as the world adapted to working outside the office. These changes have put "cybersecurity issues and risks” at the t...
3 strategies to launch an effective data governance plan
Aware of the potential risks of sensitive data if not managed properly, you’ve undertaken a data discovery process to learn where it’s all stored. You’ve classified this sensitive data—confidential information like credit card numbers and home addresses collected from customers, prospects,...
AI-driven adaptive protection against human-operated ransomware
In human-operated ransomware attacks, threat actors use predictable methods to enter a device but eventually rely on hands-on-keyboard activities to move inside a network. To fortify our existing cloud-delivered automated protection against complex attacks like human-operated ransomware, we...
Microsoft is a 5-time Leader in the Gartner Magic Quadrant for Access Management
We are honored that Gartner recognized Microsoft as a Leader in Gartner® Magic QuadrantTM for Access Management in Microsoft Azure Active Directory Azure AD. In addition, Microsoft has placed the farthest right on the “Completeness of Vision” axis. None of this is possible without you, our...
Discover what’s new and gain technical expertise from MISA at Ignite
It’s hard to believe we’re so close to the end of another year, and what a year it’s been. For too brief a time in some places, our masks were tossed away, only to find us digging them out of drawers again not long after. But masked up or not, it’s been good to see local restaurants buzzing with...
Afternoon Cyber Tea: Learn how to stop misinformation threats from nation-state bad actors
Information has long been wielded as an instrument of national power and influence. In today’s digital world, misinformation can also be just as powerful. On a special episode of Afternoon Cyber Tea with Ann Johnson, Sandra Joyce, Executive Vice President and Head of Mandiant Intelligence at...
Why diversity is important for a strong cybersecurity team
Medicine. Aeronautics. Academia. When you’re a cybersecurity professional, the colleague next to you could have started in one of these industries—or just about any other you can imagine. The backgrounds of cybersecurity professionals are more diverse than those of professionals in other...
Improve your threat detection and response with Microsoft and Wortell
This blog post is part of the Microsoft Intelligent Security Association MISA guest blog series. Learn more about MISA. The way of working is changing rapidly. Many workloads are moving to the cloud and the pandemic accelerated organizations to provide infrastructure to aid employees working from...
CISO Stressbusters Post #3: 3 ways to share accountability for security risk management
Jim Eckart, former Chief Information Security Officer CISO of The Coca-Cola Company and current Chief Security Advisor at Microsoft shares his advice for relieving stress in today’s CISO Stressbuster post. If you are a CISO, it can feel like the responsibility for keeping the company secure rests...
Microsoft a Leader in The Forrester Wave™ for Endpoint Management Platforms
The endpoint management category is being redefined in real time. Organizations no longer need tools that only inventory devices or enforce configuration policies; they need a platform that connects identity, security, compliance, and AI governance across every endpoint where work happens...
Microsoft Defender email security benchmarking: Key insights from one year of data
Microsoft publishes quarterly email security benchmarking data comparing Microsoft Defender against secure email gateway SEG and integrated cloud email security ICES vendors using real-world threat telemetry. A year ago, we set out to change how email security effectiveness is measured. With our...
When configuration becomes a vulnerability: Exploitable misconfigurations in AI apps
In this article 1. Background 2. What is an exploitable misconfiguration? 3. Exploitable misconfigurations in popular AI applications 4. Minimizing the risk: Practical deployment guidance 5. How Microsoft Defender for Cloud helps detect exposures in Kubernetes 6. Learn more AI and agentic...
Email threat landscape: Q1 2026 trends and insights
In this article 1. Tycoon2FA disruption impact 2. QR code phishing attacks 3. CAPTCHA tactics 4. Malicious payloads 5. Business email compromise 6. Defending against email threats 7. Microsoft Defender detections During the first quarter of 2026 January-March, Microsoft Threat Intelligence detect...
Detection strategies across cloud and identities against infiltrating IT workers
In this article 1. Attack chain overview 1. Activities in pre-recruitment phase 2. Activities in recruiting phase 3. Activities in post-recruitment phase 2. Mitigation and protection guidance 3. Microsoft Defender XDR detections The shift to remote and hybrid work since the pandemic expanded glob...
New Microsoft Purview innovations for Fabric to safely accelerate your AI transformation
As organizations adopt AI, security and governance remain core primitives for safe AI transformation and acceleration. After all, data leaders are aware of the notion that: Your AI is only as good as your data. Organizations are skeptical about AI transformation due to concerns of sensitive data...
From transparency to action: What the latest Microsoft email security benchmark reveals
In our last benchmarking post, Clarity in complexity: New insights for transparent email security ,1 we shared why transparency matters more than ever in email security and how clear, consistent benchmarking helps security teams cut through noise and make confident decisions. Today, we’re...
New e-book: Establishing a proactive defense with Microsoft Security Exposure Management
Effective exposure management begins by illuminating and hardening risks across the entire attack surface. Some of the most meaningful shifts in security happen quietly—when teams take a clear look at their exposure landscape and acknowledge the gap between where they stand today and where they...
The security implementation gap: Why Microsoft is supporting Operation Winter SHIELD
Every conversation I have with information security leaders tends to land in the same place. People understand what matters. They know the frameworks, the controls, and the guidance. They can explain why identity security, patching, and access control are critical. And yet incidents keep happenin...
Case study: Securing AI application supply chains
The rapid adoption of AI applications, including agents, orchestrators, and autonomous workflows, represents a significant shift in how software systems are built and operated. Unlike traditional applications, these systems are active participants in execution. They make decisions, invoke tools,...
New Microsoft Data Security Index report explores secure AI adoption to protect sensitive data
Generative AI and agentic AI are redefining how organizations innovate and operate, unlocking new levels of productivity, creativity and collaboration across industry teams. From accelerating content creation to streamlining workflows, AI offers transformative benefits that empower organizations ...
Resurgence of a multi‑stage AiTM phishing and BEC campaign abusing SharePoint
Microsoft Defender Researchers uncovered a multi‑stage adversary‑in‑the‑middle AiTM phishing and business email compromise BEC campaign targeting multiple organizations in the energy sector, resulting in the compromise of various user accounts. The campaign abused SharePoint file‑sharing services...
Inside RedVDS: How a single virtual desktop provider fueled worldwide cybercriminal operations
Over the past year, Microsoft Threat Intelligence observed the proliferation of RedVDS, a virtual dedicated server VDS provider used by multiple financially motivated threat actors to commit business email compromise BEC, mass phishing, account takeover, and financial fraud. Microsoft’s...
Defending against the CVE-2025-55182 (React2Shell) vulnerability in React Server Components
CVE-2025-55182 also referred to as React2Shell and includes CVE-2025-66478, which was merged into it is a critical pre-authentication remote code execution RCE vulnerability affecting React Server Components, Next.js, and related frameworks. With a CVSS score of 10.0, this vulnerability could all...
Shai-Hulud 2.0: Guidance for detecting, investigating, and defending against the supply chain attack
The Shai‑Hulud 2.0 supply chain attack represents one of the most significant cloud-native ecosystem compromises observed recently. Attackers maliciously modified hundreds of publicly available packages, targeting developer environments, continuous integration and continuous delivery CI/CD...
New IDC research highlights a major cloud security shift
Cloud security is at a tipping point. While moving to the cloud powers both growth and speed for organizations, it can also bring new risks. According to IDC’s latest research, organizations experienced an average of nine cloud security incidents in 2024, with 89% reporting a year-over-year...
Microsoft raises the bar: A smarter way to measure AI for cybersecurity
ExCyTIn-Bench is Microsoft’s newest open-source benchmarking tool designed to evaluate how well AI systems perform real-world cybersecurity investigations.1 It helps business leaders assess language models by simulating realistic cyberthreat scenarios and providing clear, actionable insights into...
Securing agentic AI: Your guide to the Microsoft Ignite sessions catalog
Security is a core focus at Microsoft Ignite 2025, reflected in dedicated sessions and hands-on experiences designed for security professionals and leaders. Whether you’re shaping strategy or working on the front lines, Microsoft Ignite offers direct access to the latest advancements and practica...
XCSSET evolves again: Analyzing the latest updates to XCSSET’s inventory
Microsoft Threat Intelligence has identified yet another XCSSET variant in the wild that introduces further updates and new modules beyond those detailed in our March 2025 blog post. The XCSSET malware is designed to infect Xcode projects, typically used by software developers, and run while an...
Discover how automatic attack disruption protects critical assets while ensuring business continuity
Traditional security solutions often operate in a one-size-fits-all alert model that treats every detection equally, regardless of how important the asset is. But not all assets are equal. Critical assets are systems governing access, identity, or sensitive data. They are essential to an...
The ultimate guide to Microsoft Security at RSAC 2025
The Ultimate Guide to Microsoft Security at RSAC 2025 So you just finished watching Microsoft Secure. That means by now, you’ve heard about our new protections for AI and Microsoft Security Copilot agents. These innovations will be the focus of Microsoft Security’s sessions and activities at RSAC...
Join the new Microsoft Security experience at Microsoft Ignite 2023
During the past few years, we’ve managed a lot of change and disruption in our security work, in our lives, and in society at large. This year we’re excited to welcome back security leaders, aspiring leaders, and IT professionals—in person—to Microsoft Ignite from November 14 to 17, 2023, and...
New Microsoft security tools to protect families and businesses
Today marks an exciting milestone in Microsoft’s AI journey. This morning, at an event in New York City, we made several major announcements to empower people across work and life—you can read more about Microsoft Bing and Edge with Copilot, what’s new from Microsoft 365 Copilot and Bing Chat...
How to build stronger security teams
The security community is continuously changing, growing, and learning from each other to better position the world against cyberthreats. In the latest post of our Community Voices blog series, Microsoft Security Senior Product Marketing Manager Brooke Lynn Weenig talks with Truesec Chief Chaos...
Public preview: Improve Win32 app security via app isolation
The post Public preview: Improve Win32 app security via app isolation appeared first on Microsoft Security Blog...
Latest Microsoft Entra advancements strengthen identity security
If you read behind the attention-grabbing headlines, most novel techniques rely on compromised identities.1 In fact, of all the ways an attacker can get into your digital estate, identity compromise is still the most common.2 This makes identity your first line of defense. In many organizations,...
Secure your business like you secure your home: 5 steps to protect against cybercrime
Running a business requires a lot of determination and sometimes a leap of faith. Every day brings a new challenge, and many times it can feel like the stress and uncertainty are too much. That’s when you remind yourself why you took the leap—the satisfaction of realizing your own vision—and you...