Microsoft at RSA 2022: Envisioning the future of security

Like most of you, I was glad to see the 2022 RSA Conference return to its in-person roots after a two-year digital hiatus. This year’s event was a great success, drawing 26,000 attendees to three days of cutting-edge security sessions, tutorials, seminars, and special events at Moscone Center in...

MSTICPy January 2022 hackathon highlights

During the month of January 2022, the Microsoft Threat Intelligence Center MSTIC ran its inaugural hackathon for the open-source Jupyter and Python Security Tools library, MSTICPy. We asked the security community for their contributions to expand and improve MSTICPy’s features and capabilities, a...

How Red Canary and Microsoft can help reduce your alert fatigue

This blog post is part of the Microsoft Intelligent Security Association guest blog series. Learn more about MISA. Security alert fatigue Organizations often feel overwhelmed by the number of security alerts they receive. Frustrated by alert fatigue, these organizations want a deeper understandin...

Adopting a Zero Trust approach throughout the lifecycle of data

Instead of believing everything behind the corporate firewall is safe, the Zero Trust model assumes breach and verifies each request as though it originates from an uncontrolled network. Regardless of where the request originates or what resource it accesses, Zero Trust teaches us to “never trust...

NOBELIUM targeting delegated administrative privileges to facilitate broader attacks

The Microsoft Threat Intelligence Center MSTIC has detected nation-state activity associated with the threat actor tracked as NOBELIUM, attempting to gain access to downstream customers of multiple cloud service providers CSP, managed service providers MSP, and other IT services organizations...

archTIS and Microsoft: Zero Trust information security for Microsoft Teams

Microsoft Teams has seen a surge in growth during the pandemic with over 115 million daily active users and growing.1 With it, customer imperative for enabling safe and trustworthy online collaboration has also increased significantly. The speed and simplicity of Teams business users creating new...

It’s Cybersecurity Awareness Month and there is still a lot to do

October is National Cyber Security Awareness Month NCSAM. And there is still a lot to do! For the last 17 years, the National Cybersecurity Awareness Month NCSAM campaign, driven by the Department of Homeland Security, has raised awareness about the importance of cyber security across the Nation...

How to detect and mitigate phishing risks with Microsoft and Terranova Security

Detect, assess, and remediate phishing risks across your organization A successful phishing attack requires just one person to take the bait. That’s why so many organizations fall victim to these cyber threats. To reduce this human risk, you need a combination of smart technology and people-centr...

CISO Stressbusters: Post #4: 4 tips for running a highly effective security operation

Rebecca Wynn, Global CISO & Chief Privacy Officer CISO of 247.ai , shares her advice for relieving stress in today’s CISO Stressbuster post. In many organizations, CISO is held accountable for security breaches, yet they don’t have control over all the decisions and systems that impact cyber risk...

Best security, compliance, and privacy practices for the rapid deployment of publicly facing Microsoft Power Apps intake forms

With the dawn of the COVID-19 pandemic, state and federal agencies around the globe were looking at ways to modernize data intake for social services recipients. The government of a country of about 40 million citizens reached out to Microsoft and asked us to assist in this endeavor. Going...

Exploiting a crisis: How cybercriminals behaved during the outbreak

In the past several months, seemingly conflicting data has been published about cybercriminals taking advantage of the COVID-19 outbreak to attack consumers and enterprises alike. Big numbers can show shifts in attacker behavior and grab headlines. Cybercriminals did indeed adapt their tactics to...

Managing risk in today’s IoT landscape: not a one-and-done

The reality of securing IoT over time It’s difficult to imagine any aspect of everyday life that isn’t affected by the influence of connectivity. The number of businesses that are using IoT is growing at a fast pace. By 2021, approximately 94 percent of businesses will be using IoT. Connectivity...

Norsk Hydro responds to ransomware attack with transparency

Last March, aluminum supplier Norsk Hydro was attacked by LockerGoga, a form of ransomware. The attack began with an infected email and locked the files on thousands of servers and PCs. All 35,000 Norsk Hydro employees across 40 countries were affected. In the throes of this crisis, executives ma...

Machine learning vs. social engineering

Machine learning is a key driver in the constant evolution of security technologies at Microsoft. Machine learning allows Microsoft 365 to scale next-gen protection capabilities and enhance cloud-based, real-time blocking of new and unknown threats. Just in the last few months, machine learning h...

A worthy upgrade: Next-gen security on Windows 10 proves resilient against ransomware outbreaks in 2017

Adopting reliable attack methods and techniques borrowed from more evolved threat types, ransomware attained new levels of reach and damage in 2017. The following trends characterize the ransomware narrative in the past year: Three global outbreaks showed the force of ransomware in making...

#AVGater vulnerability does not affect Windows Defender Antivirus, MSE, or SCEP

On November 10, 2017, a vulnerability called AVGater was discovered affecting some antivirus products. The vulnerability requires a non-administrator-level account to perform a restore of a quarantined file. Windows Defender Antivirus and other Microsoft antimalware products, including System...

​​Microsoft named a Leader in the KuppingerCole Leadership Compass for Cloud Native Application Protection Platforms (CNAPP)

As organizations adopt AI, they must secure both cloud and AI environments through a unified security control plane as their attack surface expands. Because modern applications and AI workloads are built and run in the cloud, security teams must understand which exposures matter most, prioritize...

ACR Stealer: Two observed intrusion chains amid increased threat activity

In this article 1. Campaign 1: WebDAV-based ClickFix with Python loaders and blockchain C2 2. Campaign 2: MSHTA-initiated PowerShell chain with steganographic payload delivery 3. Mitigation and protection guidance 4. References 5. Learn more From late April 2026 to mid-June 2026, Microsoft Defend...

Beyond the benchmark: Advancing security at AI speed

In this article 1. From the lab into the pipeline 2. This month’s set of discoveries 3. Beyond the headline: What the engineering work taught us 4. Where we go next 5. Defense at AI speed 6. Learn more Every vulnerability has two clocks running. One belongs to the defender racing to find it; the...

Updating the taxonomy of failure modes in agentic AI systems: What a year of red teaming taught us

In this article 1. Why the Taxonomy Needed Updating 2. Seven new failure modes 3. Operational findings: What red teaming showed 4. New mitigations 5. What to do this quarter When the Microsoft AI Red Team published the Taxonomy of Failure Modes in Agentic AI Systems in April 2025, the goal was a...

WhatsApp malware campaign delivers VBScript and MSI backdoors

In this article 1. Attack chain overview 2. Mitigation and protection guidance 3. Hunting queries 4. Indicators of compromise Microsoft Defender Experts observed a campaign beginning in late February 2026 that uses WhatsApp messages to deliver malicious Visual Basic Script VBS files. Once execute...

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...

Cyber Signals Issue 9 | AI-powered deception: Emerging fraud threats and countermeasures

Introduction | Security snapshot | Threat briefing Defending against attacks | Expert profile Microsoft maintains a continuous effort to protect its platforms and customers from fraud and abuse. From blocking imposters on Microsoft Azure and adding anti-scam features to Microsoft Edge, to fightin...

New Microsoft Purview features use AI to help secure and govern all your data

In the past few years, we have witnessed how digital and cloud transformation has accelerated the growth of data. With more and more customers moving to the cloud, and with the rise of hybrid work, data usage has moved beyond the traditional borders of business. Data is now stored in multiple clo...

5 reasons to adopt a Zero Trust security strategy for your business

Adopting Zero Trust security for your enterprise is no longer a wish-list item—it’s a business imperative. The workplace today extends to almost anywhere, anytime, from any device. Siloed, patchwork security solutions leave gaps that threat actors continue to exploit. A comprehensive Zero Trust...

A Leader in multiple Zero Trust security categories: Industry analysts weigh in

The massive shift toward remote and hybrid work over the last two years has prompted many security professionals to reassess where siloed security may create vulnerabilities.1 For that reason, Zero Trust has become the gold standard for enterprise security. An effective Zero Trust approach requir...

Microsoft named a Leader in IDC MarketScape for Modern Endpoint Security for Enterprise and Small and Midsize Businesses

The security stakes have never been higher and, consequently, the protection of endpoints as a key component of any extended detection and response XDR strategy has never been more critical—for organizations of all sizes. Microsoft is thrilled to be recognized as a Leader in IDC’s MarketScape...

#BeCyberSmart: When we learn together, we’re more secure together

2021 has been a watershed year in cybersecurity. The pandemic continued to bring new challenges as attackers took advantage of overstretched security teams to unleash new human-operated ransomware1, malware, and nation-state attacks like those against Colonial Pipeline2 and JBS Food3. With the mo...

How a positive hybrid work culture can help you to mitigate insider risk

As Vasu Jakkal recently shared, we are operating in the most sophisticated threat landscape ever seen, and coupled with the next great disruption—hybrid work—security is more challenging than ever. Protecting from external threats is only one part of the challenge, though. You also must protect...

Back to the future: What the Jericho Forum taught us about modern security

Some of the earliest formal work on what we now call Zero Trust started around in a security consortium known as the Jericho Forum which later merged into The Open Group Security Forum. This started as a group of like-minded CISOs wrestling with the limitations of the dominant and unquestioned...

Advanced protection for web applications in Azure with Radware’s Microsoft Security integration

This blog post is part of the Microsoft Intelligent Security Association guest blog series. Learn more about MISA here. The state of application security Companies face a wide range of security challenges, such as Open Source Foundation for Application Security Project OWASP vulnerabilities,...

Force firmware code to be measured and attested by Secure Launch on Windows 10

You cannot build something great on a weak foundation – and security is no exception. Windows is filled with important security features like Hypervisor-protected code integrity HVCI and Windows Defender Credential Guard that protect users from advanced hardware and firmware attacks. For these...

How do I implement a Zero Trust security model for my Microsoft remote workforce?

Digital empathy should guide your Zero Trust implementation Zero Trust has always been key to maintaining business continuity. And now, it’s become even more important during the COVID-19 pandemic to helping enable the largest remote workforce in history. While organizations are empowering people...

Guiding principles of our identity strategy: staying ahead of evolving customer needs

Last June, when I shared the 5 principles driving a customer-obsessed identity strategy at Microsoft, many of you had embraced the idea of a boundaryless environment, but relatively few had implemented it in practice. A global pandemic made remote access essential and forced many of you to...

Protecting your remote workforce from application-based attacks like consent phishing

The global pandemic has dramatically shifted how people work. As a result, organizations around the world have scaled up cloud services to support collaboration and productivity from home. We’re also seeing more apps leverage Microsoft’s identity platform to ensure seamless access and integrated...

Microsoft continues to extend security for all with mobile protection for Android

Just a year ago, we shared our first steps on a journey to enable our customers to protect endpoints running a variety of platforms with our announcement of Microsoft Defender ATP for Mac. Knowing that each of our customers have unique environments and unique needs and are looking for more...

Steer clear of tax scams

In the month of February, we saw an average of 300,000 phishing attempts across Microsoft’s browsing platforms daily. Our security experts expect these attempted scams to become increasingly more prevalent through the April 15 Tax Day, especially in the two weeks leading up to it, when about 25...

Invisible resource thieves: The increasing threat of cryptocurrency miners

The surge in Bitcoin prices has driven widescale interest in cryptocurrencies. While the future of digital currencies is uncertain, they are shaking up the cybersecurity landscape as they continue to influence the intent and nature of attacks. Cybercriminals gave cryptocurrencies a bad name when...

Least privilege for AI agents: Identity, access, and tool binding

In this article 1. Real-world scenarios 2. Best Practices: Identity + RBAC + Scope + Safe Tool Binding 3. Looking Ahead AI agents aren't only smarter API callers. They plan, chain actions across systems, and invoke tools in sequences while no single human explicitly approves each step. The...

GigaWiper: Anatomy of a destructive backdoor assembled from multiple malware

In this article 1. A wiper inside a backdoor 2. Backdoor capabilities 3. How GigaWiper was assembled 4. Conclusion: Multiple destructive capabilities consolidated into a single implant 5. Defending against destructive threats 6. Microsoft Defender detections 7. Indicators of compromise In October...

Chromium extension uses AI‑related branding to redirect browser search

In this article 1. Extension overview 2. Key indicators of malicious behavior 3. Dynamic analysis findings 4. Mitigation and protection guidance 5. References 6. Learn more Microsoft Threat Intelligence has identified a malicious Chromium-based extension that spoofs the AI-powered answer engine...

Mini Shai Hulud: Compromised @antv npm packages enable CI/CD credential theft

In this article 1. Attack chain overview 1. Technical analysis 2. How GitHub took action to prevent further harm 2. Mitigation and protection guidance 1. Microsoft Defender XDR Detections 2. Microsoft Defender XDR Threat analytics 3. Advanced hunting 4. Indicators of Compromise IOC 3. References ...

Securing the gaming culture of cultures

The Deputy CISO blog series is where Microsoft 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...

Undermining the trust boundary: Investigating a stealthy intrusion through third-party compromise

In this article 1. Abuse of trusted relationships as an attack delivery mechanism 2. Methods, tools, and access strategies 3. Campaign conclusion 4. Microsoft Defender detection and hunting guidance In recent years, many sophisticated intrusions have increasingly avoided using noisy exploits,...

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...

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...

Quantum-safe security: Progress towards next-generation cryptography

Quantum computing promises transformative advancements, yet it also poses a very real risk to today’s cryptographic security. In the future scalable quantum computing could break public-key cryptography methods currently in use and undermine digital signatures, resulting in compromised...

6 insights from Microsoft’s 2024 state of multicloud risk report to evolve your security strategy

Multicloud computing has become the foundation for digital businesses, with 86% of organizations having already adopted a multicloud approach.1 However, for all its benefits around increased agility, flexibility, and choice, we also see unique challenges with multicloud—including the need to mana...

Navigating privacy in a data-driven world with Microsoft Priva

Data protection and privacy have become business imperatives. In a global survey conducted by Microsoft and leaders in the academic privacy space, 90 percent of respondents said they would not buy from an organization that does not properly protect its data.1 More than ever, people have a high...

Solving one of NOBELIUM’s most novel attacks: Cyberattack Series

Our story begins with eight Microsoft Detection and Response Team DART analysts gathered around a customer’s conference room to solve a cybersecurity mystery. Joined by members of the customer’s cybersecurity team, they were there to figure out how a Russia-based nation-state hacking group known ...