1653 matches found
What’s new, updated, or recently released in Microsoft Security
New capabilities in Microsoft Agent 365; new Microsoft Defender and GitHub integration At Microsoft, security innovations are purpose-built to help every organization protect end-to-end with the speed and scale of AI. Our vision is simple: security should be ambient and autonomous, just like the ...
Cookie-controlled PHP webshells: A stealthy tradecraft in Linux hosting environments
In this article 1. Cookie-controlled execution behavior 2. Observed variants of cookie-controlled PHP web shells 3. Mitigation and protection guidance 4. Microsoft Defender XDR detections 5. Microsoft Security Copilot prompts 6. Microsoft Defender XDR threat analytics 7. MITRE ATT&CK™ Techniques...
Detecting and analyzing prompt abuse in AI tools
This second post in our AI Application Security series is all about moving from planning to practice. AI Application Series 1: Security considerations when adopting AI tools established how AI adoption expands the attack surface and our threat-modelling guidance on the Microsoft security blog...
The strategic SIEM buyer’s guide: Choosing an AI-ready platform for the agentic era
As the agentic era reshapes security operations, leaders face a strategic inflection point: legacy security information and event management SIEM solutions and fragmented toolchains can no longer keep pace with the scale, speed, and complexity of modern cyberthreats. Organizations can choose to...
Microsoft Security success stories: Why integrated security is the foundation of AI transformation
AI is transforming how organizations operate and how they approach security. In this new era of agentic AI, every interaction, digital or human, must be built on trust. As businesses modernize, they’re not just adopting AI tools, they're rearchitecting their digital foundations. And that means...
Access Fabric: A modern approach to identity and network access
Today, most organizations use multiple identity systems and multiple network access solutions from multiple vendors. This happens, either intentionally or organically, when different areas of a company choose different tools, creating a fragmented environment that leaves weaknesses that...
Microsoft named a Leader in the Gartner® Magic Quadrant™ for Access Management for the ninth consecutive year
I'm deeply grateful to our customers and partners for their continued trust and collaboration. We’re happy to share that Microsoft has been recognized as a Leader in the 2025 Gartner® Magic Quadrant™ for Access Management for the ninth consecutive year. We feel this recognition underscores the...
Ambient and autonomous security for the agentic era
Over the past year, I've had countless conversations with customers who are striving to unlock human ambition with AI. They are on their journey to become Frontier Firms, where humans and agents push the boundaries of innovation and create new possibilities, empowering humans to become limitless...
Collaborative research by Microsoft and NVIDIA on real-time immunity
AI-Powered Threats Demand AI-Powered Defense While AI supports growth and innovation, it is also reshaping how organizations address faster, more adaptive security risks. AI-driven security threats, including “vibe-hacking”, are evolving faster than traditional defenses can adapt. Attackers can n...
Harden your identity defense with improved protection, deeper correlation, and richer context
In today’s digital-first enterprise, identities have become the new corporate security perimeter. Hybrid work and cloud-first strategies have dissolved traditional network boundaries and dramatically increased the complexity of identity fabrics. Security teams are left managing a constellation of...
Harden your identity defense with improved protection, deeper correlation, and richer context
In today’s digital-first enterprise, identities have become the new corporate security perimeter. Hybrid work and cloud-first strategies have dissolved traditional network boundaries and dramatically increased the complexity of identity fabrics. Security teams are left managing a constellation of...
The importance of hardening customer support tools against cyberattacks
The Deputy CISO blog series is whereMicrosoft Deputy Chief Information Security Officers CISOs share their thoughts on what is most important in their respective domains. In this series, you will get practical advice, tactics to start and stop deploying, forward-looking commentary on where the...
Inside Microsoft Threat Intelligence: Calm in the chaos
Leading Through the Worst Day Incident response is never orderly. Threat actors don’t wait. Environments are compromised. Data is missing. Confidence is shaken. But for Microsoft’s Incident Response IR team, that chaos is exactly where the work begins. In Episode 1, we showed how Microsoft Threat...
Securing and governing the rise of autonomous agents
In this blog, you will hear directly from Corporate Vice President and Deputy Chief Information Security Officer CISO for Identity, Igor Sakhnov, about how to secure and govern autonomous agents. This blog is part of a new ongoing series where our Deputy CISOs share their thoughts on what is most...
Planning your move to Microsoft Defender portal for all Microsoft Sentinel customers
In November 2023, Microsoft announced our strategy to unify security operations by bringing the best of XDR and SIEM together. Our first step was bringing Microsoft Sentinel into the Defender portal, giving teams a single, comprehensive view of incidents, reducing queue management, enriched threa...
Building security that lasts: Microsoft’s journey towards durability at scale
In this blog you will hear directly from Microsoft’s Deputy Chief Information Security Officer CISO for Azure and operating systems, Mark Russinovich, about how Microsoft operationalized security durability at scale. This blog is part of an ongoing series where our Deputy CISOs share their though...
Announcing a new strategic collaboration to bring clarity to threat actor naming
In today’s cyberthreat landscape, even seconds of delay can mean the difference between stopping a cyberattack or falling victim to ransomware. One major cause of delayed response is understanding threat actor attribution, which is often slowed by inaccurate or incomplete data as well as...
Microsoft partners with Global Anti-Scam Alliance to fight cybercrime
Being the victim of a scam can be devastating. Unfortunately, the number of people who can attest to the truth of this statement, either because they themselves have been scammed or because it has happened to someone they know, is growing. The Global Anti-Scam Alliance GASA reports that in 2024...
Meet the Deputy CISOs who help shape Microsoft’s approach to cybersecurity
Microsoft launched its Cybersecurity Governance Council in 2024, and with it, named a group of deputy chief information security officers that ensure comprehensive oversight of the company's cybersecurity risk, defense, and compliance. These leaders work in tandem with product and engineering...
Transforming public sector security operations in the AI era
The cyberthreat landscape is evolving at an unprecedented pace, becoming increasingly dangerous and complex. Nation-state threat actors and cybercriminals are employing advanced tactics and generative AI to execute highly sophisticated attacks. This situation is further compounded by outdated...
Test your team’s security readiness with the Gone Phishing Tournament
Why should you care about the behavioral risk of your employees? Eighty-two percent of breaches include and often start with user behavior.1 Not all are phishing, but a majority of them are just that. Phishing is, and has been for many years, the cheapest and most reliable way for an attacker of...
Discover 3 ways to take a holistic approach to data protection
The risk landscape for organizations has changed significantly in the past few years. Traditional ways of identifying and mitigating risks simply don’t work. While traditionally, organizations have focused on external threats, risks from within the organization are just as prevalent and harmful...
Defenders wanted—building the new cybersecurity professionals
As part of Cybersecurity Awareness Month, we published a special blog post earlier this week featuring real-world experiences shared by cybersecurity professionals: people with diverse backgrounds in law, academia, software development, and other seemingly unrelated fields. This topic is near and...
Secure what’s next: Your guide to Microsoft Security at Microsoft Ignite 2026
In this article 1. Why you should attend Microsoft Ignite 2. Make the most of your time at Microsoft Ignite 3. Explore the Security sessions at Microsoft Ignite 2026 4. Build your schedule In the agentic era, the stakes are higher: AI agents now act with real access to your identities, your data,...
Microsoft named a Leader in the Frost Radar™: Cloud Workload Protection Platforms, 2026
Security teams are overwhelmed with findings but still struggle to answer a simple question: which risks matter right now? A vulnerability alone is rarely the problem. The same vulnerability running in production, exposed through a misconfiguration or over-permissioned identity, is a real path to...
Applying security fundamentals to AI: Practical advice for CISOs
What to know about the era of AI The first thing to know is that AI isn’t magic The best way to think about how to effectively use and secure a modern AI system is to imagine it like a very new, very junior person. It’s very smart and eager to help but can also be extremely unintelligent. Like a...
Identity security is the new pressure point for modern cyberattacks
Identity attacks no longer hinge on who a cyberattacker compromises, but on what that identity can access. As organizations manage growing numbers of human, non-human, and agentic identities, their access fabric multiplies across apps, resources, and environments, which increases both operational...
From awareness to action: Building a security-first culture for the agentic AI era
The insights gained from Cybersecurity Awareness Month, right through to Microsoft Ignite 2025, demonstrate that security remains a top priority for business leaders. It serves as a strategic lever for organizational growth, fosters trust, and facilitates the advancement of AI innovation. The Wor...
Clarity in complexity: New insights for transparent email security
As email threats grow more sophisticated and layered security architectures become more common, organizations need clear, data-driven insights to evaluate how their security solutions perform together. Benchmarking plays a critical role in helping security leaders understand not just individual...
Changing the physics of cyber defense
The Deputy CISO blog series is whereMicrosoft Deputy Chief Information Security Officers CISOs share their thoughts on what is most important in their respective domains. In this series, you will get practical advice, tactics to start and stop deploying, forward-looking commentary on where the...
Charting the future of SOC: Human and AI collaboration for better security
Security operations centers are under pressure from unprecedented scale and complexity. Speed, precision, and consistency matter more than ever, and AI is everywhere—but hype alone doesn’t solve the challenge. This blog shares our journey and insights from building autonomous AI agents for MDR...
Microsoft named a Leader in the Gartner® Magic Quadrant™ for Access Management for the ninth consecutive year
I'm deeply grateful to our customers and partners for their continued trust and collaboration. We’re happy to share that Microsoft has been recognized as a Leader in the 2025 Gartner® Magic Quadrant™ for Access Management for the ninth consecutive year. We feel this recognition underscores the...
Agents built into your workflow: Get Security Copilot with Microsoft 365 E5
The cybersecurity landscape is at a historic inflection point. As cyberattackers wield AI to automate cyberattacks at extraordinary speed and scale, the challenge before us is not just to keep pace—but to leap ahead. There are over four million unfilled cybersecurity jobs, so depending solely on...
Extortion and ransomware drive over half of cyberattacks
In 80% of the cyber incidents Microsoft’s security teams investigated last year, attackers sought to steal data—a trend driven more by financial gain than intelligence gathering. According to the latest Microsoft Digital Defense Report, written with our Chief Information Security Officer Igor...
Microsoft named a Leader in the IDC MarketScape for XDR
When cybersecurity stakes are high and complexity is the norm, Microsoft doesn’t just participate, it excels with Microsoft Defender XDR—built to anticipate, disrupt, and outpace modern cyberthreats. We are excited to announce that Microsoft has been named a Leader in the IDC MarketScape: Worldwi...
Introducing Microsoft Marketplace — Thousands of solutions. Millions of customers. One Marketplace.
A new breed of industry-leading company is taking shape — Frontier Firms. These organizations blend human ambition with AI-powered technology to reshape how innovation is scaled, work is orchestrated and value is created. They’re accelerating AI transformation to enrich employee experiences,...
Microsoft Purview delivered 30% reduction in data breach likelihood
In today’s digital-first world, data is both an asset and a liability. As organizations scale their use of cloud platforms, AI, and remote collaboration tools, the complexity of managing data security, data privacy, and regulatory compliance grows exponentially. For organizations, the challenge i...
Azure mandatory multifactor authentication: Phase 2 starting in October 2025
As cyberattacks become increasingly frequent, sophisticated, and damaging, safeguarding your digital assets has never been more critical, and at Microsoft, your security is our top priority. Microsoft research shows that multi-factor authentication MFA can block more than 99.2% of account...
Securing and governing the rise of autonomous agents
In this blog, you will hear directly from Corporate Vice President and Deputy Chief Information Security Officer CISO for Identity, Igor Sakhnov, about how to secure and govern autonomous agents. This blog is part of a new ongoing series where our Deputy CISOs share their thoughts on what is most...
Connect with the security community at Microsoft Ignite 2025
In today’s AI-powered world, security professionals are facing unprecedented challenges—and opportunities. As generative AI reshapes the digital landscape, the need for robust, intelligent, and adaptive security strategies has never been more urgent. At Microsoft Ignite 2025, we will showcase...
Sharing practical guidance: Launching Microsoft Secure Future Initiative (SFI) patterns and practices
We’re excited to launch Microsoft Secure Future Initiative SFI patterns and practices : a new library of actionable guidance designed to help organizations implement security measures at scale. This launch marks the next step in our journey to make our SFI learnings practical for our customers,...
Protecting customers from Octo Tempest attacks across multiple industries
In recent weeks, Microsoft has observed Octo Tempest, also known as Scattered Spider, impacting the airlines sector, following previous activity impacting retail, food services, hospitality organizations, and insurance between April and July 2025. This aligns with Octo Tempest’s typical patterns ...
Improving IT efficiency with Microsoft Security Copilot in Microsoft Intune and Microsoft Entra
When Microsoft introduced Microsoft Security Copilot last year, our vision was to empower organizations with generative AI that helps security and IT teams simplify operations and respond faster. Since then, we’ve continuously innovated and learned alongside our customers. They consistently tell ...
Meet the Deputy CISOs who help shape Microsoft’s approach to cybersecurity: Part 3
Microsoft launched its Cybersecurity Governance Council in 2024, and with it, named a group of deputy chief information security officers that ensure comprehensive oversight of the company’s cybersecurity risk, defense, and compliance. These leaders work in tandem with product and engineering...
Microsoft announces the 2025 Security Excellence Awards winners
In today’s rapidly evolving digital world, security requires a global community of defenders working together as a team to build a safer world for all. That’s why we’re thrilled to recognize the extraordinary individuals and organizations who have gone above and beyond in the fight against...
New innovations in Microsoft Purview for protected, AI-ready data
The Microsoft Fabric and Microsoft Purview teams are excited to be in Las Vegas from March 31 to April 2, 2025, for the second annual and highly anticipated Microsoft Fabric Community Conference. With more than 200 sessions, 13 focused tracks, 21 hands-on workshops, and two keynotes, attendees ca...
Microsoft unveils Microsoft Security Copilot agents and new protections for AI
In this age of AI, securing AI and using it to boost security are crucial for every organization. At Microsoft, we are dedicated to helping organizations secure their future with our AI-first, end-to-end security platform. One year ago, we launched Microsoft Security Copilot to empower defenders ...
Windows 11 enables security by design from the chip to the cloud
Over the last year, PCs have kept us connected to family, friends, and enabled businesses to continue to run. This new hybrid work paradigm has got us thinking about how we will continue to deliver the best possible quality, experience, and security for the more than 1 billion people who use...
Unmasking EvilTokens: Getting to the root of device code phishing
In this article 1. What is device code phishing? 2. EvilTokens platform and operations 3. EvilTokens phishing emails 4. Mitigation and protection guidance 5. Microsoft Defender XDR detections 6. Hunting queries Following its emergence in February 2026, EvilTokens quickly became one of the most...
Improving email security outcomes with real-world Microsoft Defender insights
Every benchmark tells a story. The most valuable ones tell us where to improve next. For five consecutive quarters Microsoft has published email security benchmarking reports to provide greater transparency into real-world protection outcomes. The results have shown strong Microsoft Defender...