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Learn what generative AI can do for your security operations center
The busier security teams get, the harder it can be to understand the full impact of false positives, queue clutter, tool fragmentation, and more. But what is clear—it all adds up to increased fatigue and an increased potential to miss the cyberthreats that matter most. To help security teams...
SesameOp: Novel backdoor uses OpenAI Assistants API for command and control
Microsoft Incident Response – Detection and Response Team DART researchers uncovered a new backdoor that is notable for its novel use of the OpenAI Assistants Application Programming Interface API as a mechanism for command-and-control C2 communications. Instead of relying on more traditional...
SesameOp: Novel backdoor uses OpenAI Assistants API for command and control
Microsoft Incident Response – Detection and Response Team DART researchers uncovered a new backdoor that is notable for its novel use of the OpenAI Assistants Application Programming Interface API as a mechanism for command-and-control C2 communications. Instead of relying on more traditional...
The 5 generative AI security threats you need to know about detailed in new e-book
Generative AI is reshaping the way security teams operate—accelerating threat detection, automating workflows, and enabling scale. But as defenders embrace AI to strengthen their posture, cyberattackers are doing the same to evolve faster than traditional defenses can adapt. Microsoft’s 2025...
The 5 generative AI security threats you need to know about detailed in new e-book
Generative AI is reshaping the way security teams operate—accelerating threat detection, automating workflows, and enabling scale. But as defenders embrace AI to strengthen their posture, cyberattackers are doing the same to evolve faster than traditional defenses can adapt. Microsoft’s 2025...
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 CISO imperative: Building resilience in an era of accelerated cyberthreats
The latest Microsoft Digital Defense Report 2025 paints a vivid picture of a cyberthreat landscape in flux. The surge in financially motivated cyberattacks and the persistent risk of nation-state actors demand urgent attention. But for those of us in the Office of the Chief Information Security...
The CISO imperative: Building resilience in an era of accelerated cyberthreats
The latest Microsoft Digital Defense Report 2025 paints a vivid picture of a cyberthreat landscape in flux. The surge in financially motivated cyberattacks and the persistent risk of nation-state actors demand urgent attention. But for those of us in the Office of the Chief Information Security...
The new Microsoft Security Store unites partners and innovation
On September 30, 2025, Microsoft announced a bold new vision for security: a unified, AI-powered platform designed to help organizations defend against today’s most sophisticated cyberthreats. But an equally important story—one that’s just beginning to unfold—is how the Microsoft Security Store i...
The new Microsoft Security Store unites partners and innovation
On September 30, 2025, Microsoft announced a bold new vision for security: a unified, AI-powered platform designed to help organizations defend against today’s most sophisticated cyberthreats. But an equally important story—one that’s just beginning to unfold—is how the Microsoft Security Store i...
Inside the attack chain: Threat activity targeting Azure Blob Storage
Azure Blob Storage, like any object data service, is a high-value target for threat actors due to its critical role in storing and managing massive amounts of unstructured data at scale across diverse workloads. Organizations of all sizes use Blob Storage to support key workloads—such as AI, high...
Inside the attack chain: Threat activity targeting Azure Blob Storage
Azure Blob Storage, like any object data service, is a high-value target for threat actors due to its critical role in storing and managing massive amounts of unstructured data at scale across diverse workloads. Organizations of all sizes use Blob Storage to support key workloads—such as AI, high...
Microsoft named a Leader in the 2025 Gartner® Magic Quadrant™ for SIEM
We’re honored to share that Microsoft has again been recognized as a Leader in the2025 Gartner® Magic Quadrant™ for Security Information and Event Management SIEM.1 We believe this recognition reinforces Microsoft Sentinel's position as an industry-leading, cloud and AI-powered SIEM—designed to...
Microsoft named a Leader in the 2025 Gartner® Magic Quadrant™ for SIEM
We’re honored to share that Microsoft has again been recognized as a Leader in the2025 Gartner® Magic Quadrant™ for Security Information and Event Management SIEM.1 We believe this recognition reinforces Microsoft Sentinel's position as an industry-leading, cloud and AI-powered SIEM—designed to...
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...
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...
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...
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...
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...
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...
Building a lasting security culture at Microsoft
At Microsoft, building a lasting security culture is more than a strategic priority—it is a call to action. Security begins and ends with people, which is why every employee plays a critical role in protecting both Microsoft and our customers. When secure practices are woven into how we think,...
Building a lasting security culture at Microsoft
At Microsoft, building a lasting security culture is more than a strategic priority—it is a call to action. Security begins and ends with people, which is why every employee plays a critical role in protecting both Microsoft and our customers. When secure practices are woven into how we think,...
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...
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...
Investigating targeted “payroll pirate” attacks affecting US universities
Microsoft Threat Intelligence has observed a financially motivated threat actor that we track as Storm-2657 compromising employee accounts to gain unauthorized access to employee profiles and divert salary payments to attacker-controlled accounts. These types of attacks have been dubbed “payroll...
Investigating targeted “payroll pirate” attacks affecting US universities
Microsoft Threat Intelligence has observed a financially motivated threat actor that we track as Storm-2657 compromising employee accounts to gain unauthorized access to employee profiles and divert salary payments to attacker-controlled accounts. These types of attacks have been dubbed “payroll...
Disrupting threats targeting Microsoft Teams
The extensive collaboration features and global adoption of Microsoft Teams make it a high-value target for both cybercriminals and state-sponsored actors. Threat actors abuse its core capabilities – messaging chat, calls and meetings, and video-based screen-sharing – at different points along th...
Disrupting threats targeting Microsoft Teams
The extensive collaboration features and global adoption of Microsoft Teams make it a high-value target for both cybercriminals and state-sponsored actors. Threat actors abuse its core capabilities – messaging chat, calls and meetings, and video-based screen-sharing – at different points along th...
New Microsoft Secure Future Initiative (SFI) patterns and practices: Practical guides to strengthen security
Building on the momentum of our initial launch of the Microsoft Secure Future Initiative SFI patterns and practices, this second installment continues our commitment to making security implementation practical and scalable. The first release introduced a foundational library of actionable guidanc...
New Microsoft Secure Future Initiative (SFI) patterns and practices: Practical guides to strengthen security
Building on the momentum of our initial launch of the Microsoft Secure Future Initiative SFI patterns and practices, this second installment continues our commitment to making security implementation practical and scalable. The first release introduced a foundational library of actionable guidanc...
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...
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...
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...
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...
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...
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...
Cybersecurity Awareness Month: Security starts with you
At Microsoft, security is our number one priority, and we believe that cybersecurity is as much about people as it is about technology. As we move into October and kick off Cybersecurity Awareness Month, this time of year really makes me think about how important online safety is—not just at work...
Empowering defenders in the era of agentic AI with Microsoft Sentinel
Microsoft unveils a new wave of security innovation—delivering an agentic platform to protect organizations at scale We are living through a turning point in how organizations work and defend themselves. Across industries, “Frontier Firms” are emerging; these are businesses where humans and AI...
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,...
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...
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...
Retail at risk: How one alert uncovered a persistent cyberthreat
In the latest edition of our Cyberattack Series, we dive into real-world cases targeting retail organizations. With 60% of retail companies reporting operational disruptions from cyberattacks and 43% experiencing security compromises in the past year, the risks for businesses continue to increase...
Retail at risk: How one alert uncovered a persistent cyberthreat
In the latest edition of our Cyberattack Series, we dive into real-world cases targeting retail organizations. With 60% of retail companies reporting operational disruptions from cyberattacks and 43% experiencing security compromises in the past year, the risks for businesses continue to increase...
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,...
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 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...
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...
Microsoft Defender delivered 242% return on investment over three years
The latest Forrester Total Economic Impact™ TEI study reveals a 242% return on investment ROI over three years for organizations that chose Microsoft Defender. It helps security leaders consolidate tools, reduce overhead, and empower their security operations SecOps teams with operational...
Microsoft Defender delivered 242% return on investment over three years
The latest Forrester Total Economic Impact™ TEI study reveals a 242% return on investment ROI over three years for organizations that chose Microsoft Defender. It helps security leaders consolidate tools, reduce overhead, and empower their security operations SecOps teams with operational...