Microsoft is named a Leader in the 2026 Gartner® Magic Quadrant™ for Endpoint Protection

As threats become more coordinated and faster to execute, endpoint protection has become the proving ground for modern defense. For the seventh consecutive time, Microsoft has been named a Leader in the 2026 Gartner® Magic Quadrant™ for Endpoint Protection. We believe this reflects both the...

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...

Contagious Interview: Malware delivered through fake developer job interviews

Microsoft Defender Experts has observed the Contagious Interview campaign, a sophisticated social engineering operation active since at least December 2022. Microsoft continues to detect activity associated with this campaign in recent customer environments, targeting software developers at...

A closer look at Qakbot’s latest building blocks (and how to knock them down)

Multiple Qakbot campaigns that are active at any given time prove that the decade-old malware continues to be many attackers’ tool of choice, a customizable chameleon that adapts to suit the needs of the multiple threat actor groups that utilize it. Since emerging in 2007 as a banking Trojan,...

How to protect your CAD data files with MIP and HALOCAD

This blog post is part of the Microsoft Intelligent Security Association guest blog series. Learn more about MISA. Computer-aided design CAD files are used by design professionals in the manufacturing, engineering, architecture, surveying, and construction industries. These highly valuable files...

Afternoon Cyber Tea: Cybersecurity challenged to meet diversity goals

Organizations often know they need to identify and address their cybersecurity blind spots. They also know the technology exists to help them do that. However, they don’t often understand how to communicate this need within their organization to justify the expense, nor do they know how to share...

Zero Trust: 7 adoption strategies from security leaders

Microsoft considers Zero Trust an essential component of any organization’s security plan. We have partnered with Cloud Security Alliance, a not-for-profit organization that promotes cloud computing best practices, to bring together executive security leaders to discuss and share insights about...

Microsoft open sources CodeQL queries used to hunt for Solorigate activity

A key aspect of the Solorigate attack is the supply chain compromise that allowed the attacker to modify binaries in SolarWinds’ Orion product. These modified binaries were distributed via previously legitimate update channels and allowed the attacker to remotely perform malicious activities, suc...

Becoming resilient by understanding cybersecurity risks: Part 3—a security pro’s perspective

In part two of this blog series on aligning security with business objectives and risk, we explored the importance of thinking and acting holistically, using the example of human-operated ransomware, which threatens every organization in every industry. As we exited 2020, the Solorigate attack...

Increasing resilience against Solorigate and other sophisticated attacks with Microsoft Defender

­Even as investigations into the sophisticated attack known as Solorigate are still underway, details and insights about the tools, patterns, and methods used by the attackers point to steps that organizations can take to improve their defenses against similar attacks. Solorigate is a cross-domai...

Go inside the new Azure Defender for IoT including CyberX

In 2020, the move toward digital transformation and Industry 4.0 took on new urgency with manufacturing and other critical infrastructure sectors under pressure to increase operational efficiency and reduce costs. But the cybersecurity model for operational technology OT was already shown to be...

Managing cybersecurity like a business risk: Part 1—Modeling opportunities and threats

In recent years, cybersecurity has been elevated to a C-suite and board-level concern. This is appropriate given the stakes. Data breaches can have significant impact on a company’s reputation and profits. But, although businesses now consider cyberattacks a business risk, management of cyber ris...

Open-sourcing new COVID-19 threat intelligence

A global threat requires a global response. While the world faces the common threat of COVID-19, defenders are working overtime to protect users all over the globe from cybercriminals using COVID-19 as a lure to mount attacks. As a security intelligence community, we are stronger when we share...

Unifying security policy across all mobile form-factors with Wandera and Microsoft

The way we work is evolving—technology enables more effective employees by helping them to be productive where and when they choose. Businesses have also been enjoying the productivity benefits of an always-on and always-connected workforce. While new business applications and device form-factors...

NERC CIP compliance in Azure

When I did my first North American Electric Reliability Corporation—Critical Infrastructure Protection NERC CIP compliance project it was 2009. NERC CIP was at version 3. It was the first mandatory cybersecurity standard that the utility I was working for had to meet. As it does today, the Bulk...

Azure Security Benchmark—90 security and compliance best practices for your workloads in Azure

The Azure security team is pleased to announce that the Azure Security Benchmark v1 ASB is now available. ASB is a collection of over 90 security best practices recommendations you can employ to increase the overall security and compliance of all your workloads in Azure. The ASB controls are base...

Going in-depth on the Windows 10 random number generation infrastructure

Throughout the years, we've had ongoing conversations with researchers, developers, and customers around our implementation of certain security features within the Windows operating system. Most recently, we have open-sourced our cryptography libraries as a way to contribute and show our continue...

Automated incident response in Office 365 ATP now generally available

Security teams responsible for investigating and responding to incidents often deal with a massive number of signals from widely disparate sources. As a result, rapid and efficient incident response continues to be the biggest challenge facing security teams today. The sheer volume of these...

Beyond the buzzwords

When I was a kid, Gilligan’s Island reruns aired endlessly on TV. The character of the Professor was supposed to sound smart, so he’d use complex words to describe simple concepts. Instead of saying, “I’m nearsighted” he’d say, “My eyes are ametropic and completely refractable.” Sure, it was funn...

Disrupting active exploitation of on-premises SharePoint vulnerabilities

July 23, 2025 update – Expanded analysis and threat intelligence from our continued monitoring of exploitation activity by Storm-2603 leading to the deployment of Warlock ransomware. Based on new information, we have updated the Attribution, Indicators of compromise, extended and clarified...

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 now integrate with th...

Microsoft recognized as a Leader in The Forrester Wave™: Data Security Platforms, Q1 2023

Organizations need to protect their sensitive data including intellectual property, trade secrets, customer data, and personally identifiable information from both insiders and external cyber attackers. In fact, 80 percent of organizations experience more than one data breach in their lifetime.1...

Rise in XorDdos: A deeper look at the stealthy DDoS malware targeting Linux devices

In the last six months, we observed a 254% increase in activity from a Linux trojan called XorDdos. First discovered in 2014 by the research group MalwareMustDie, XorDdos was named after its denial-of-service-related activities on Linux endpoints and servers as well as its usage of XOR-based...

Protect your business from email phishing with multi-factor authentication

Cybersecurity has been in the news far more often in the past 12 months than in previous years, as cybercriminals escalated their activity during the COVID-19 pandemic quarantine. The seismic shift of hundreds of millions of people connecting and working from home every day presented cybercrimina...

4 ways Microsoft is delivering security for all in a Zero Trust world

If there’s one thing the dawning of 2021 has shown, it’s that security isn’t getting any easier. Recent high-profile breach activity has underscored the growing sophistication of today’s threat actors and the complexity of managing business risk in an increasingly connected world. It’s a struggle...

Afternoon Cyber Tea: Evaluating individual and organizational cyber risk in a pandemic

Cybersecurity professionals find themselves in high demand as organizations worldwide continue to grapple with how to secure millions of remote workers. James Turner is an industry analyst at CISO Lens and served as an adjudicator from 2017 to 2019 for the Australian government’s cyber war games:...

5 identity priorities for 2021—strengthening security for the hybrid work era and beyond

When I outlined the five identity priorities for 2020, the world was a very different place. Since then, the COVID-19 pandemic has forever changed how organizations run their businesses. It’s also changed the way we work, learn, and collaborate. What hasn’t changed is the critical role identity...

Cybersecurity best practices to implement highly secured devices

Almost three years ago, we published The Seven Properties of Highly Secured Devices, which introduced a new standard for IoT security and argued, based on an analysis of best-in-class devices, that seven properties must be present on every standalone device that connects to the internet in order ...

Afternoon Cyber Tea: Building operational resilience in a digital world

Operational resiliency is a topic of rising importance in the security community. Unplanned events, much like the one we are facing today, are reminders of how organizations can be prepared to respond to a cyberattack. Ian Coldwater and I explored a variety of options in my episode of Afternoon...

Changing the Monolith—Part 3: What’s your process?

In my 25-year journey, I have led security and privacy programs for corporations and provided professional advisory services for organizations of all types. Often, I encounter teams frantically running around in their own silos, trying to connect the dots and yet unsure if those are the right dot...

Lessons learned from the Microsoft SOC—Part 1: Organization

We’re frequently asked how we operate our Security Operations Center SOC at Microsoft particularly as organizations are integrating cloud into their enterprise estate. This is the first in a three part blog series designed to share our approach and experience, so you can use what we learned to...

Reconstructing AI activity in investigations

AI systems are now part of everyday work. Investigators need a consistent way to reconstruct what happened within them. Security teams are already investigating activity involving Microsoft 365 Copilot and Azure AI services—from prompt injection attempts to unexpected data access. Those signals a...

The Gentlemen ransomware: Dissecting a self-propagating Go encryptor

In this article 1. Pre-encryption 2. File encryption 3. Post-encryption 4. Defending against The Gentlemen ransomware 5. Microsoft Defender detections and hunting guidance 6. Indicators of compromise Ransomware that combines robust encryption with rapid lateral movement significantly increases th...

Cross‑tenant helpdesk impersonation to data exfiltration: A human-operated intrusion playbook

In this article 1. Risk to enterprise environments 2. Attack chain overview 1. Stage 1: Initial contact via Teams T1566.003 Spearphishing via Service 2. Stage 2: Remote assistance foothold 3. Stage 3: Interactive reconnaissance and access validation 4. Stage 4: Payload placement and trusted...

Microsoft finds new NETGEAR firmware vulnerabilities that could lead to identity theft and full system compromise

The continuous improvement of security solutions has forced attackers to explore alternative ways to compromise systems. The rising number of firmware attacks and ransomware attacks via VPN devices and other internet-facing systems are examples of attacks initiated outside and below the operating...

SimuLand: Understand adversary tradecraft and improve detection strategies

At Microsoft, we continuously collaborate with customers and the InfoSec community to learn more about the latest adversary tradecraft so that we can improve our detection strategies across all our security services. Even though those detections are already built into our products, and protecting...

Meet critical infrastructure security compliance requirements with Microsoft 365

Critical infrastructure operators face a hostile cyber threat environment and a complex compliance landscape. Every operator of an industrial control system also operates an IT network to service its productivity needs. A supervisory control and data acquisition SCADA system operator of a power...

Evolving beyond password complexity as an identity strategy

The security community is continuously changing, growing, and learning from each other to better position the world against cyber threats. In the latest Voice of the Community blog series post, Microsoft Product Marketing Manager Natalia Godyla talks with Troy Hunt, founder of Have I Been Pwned,...

Microsoft Advanced Compliance Solutions in Zero Trust Architecture

Zero Trust revolves around three key principles: verify explicitly, use least privileged access, and assume breach. Microsoft’s Advanced Compliance Solutions are an important part of Zero Trust. This post applies a Zero Trust lens to protecting an organization’s sensitive data and maintaining...

How companies can prepare for a heightened threat environment

With high levels of political unrest in various parts of the world, it’s no surprise we’re also in a period of increased cyber threats. In the past, a company’s name, political affiliations, or religious affiliations might push the risk needle higher. However, in the current environment any compa...

How Office 365 learned to reel in phish

Today's post was coauthored by Debraj Ghosh, Senior Product Marketing Manager, and Jason Rogers, Principal Group Program Manager at Microsoft. We recently reported how we measure catch rates of malicious emails for Office 365 Exchange Online Protection EOP available with any Office 365 subscripti...

Overwhelmed by overchoice at RSA Conference 2018

As over 500 companies vied for mindshare at this years RSA conference - a cacophony of vendors pitching thousands of products from brightly colored booths - it reminded me of how challenging it was for me to separate signal from noise when I was managing global networks. And the rapid growth of...

Teaming up in the war on tech support scams

Editors note: Erik Wahlstrom spoke about the far-reaching impact of tech support scams and the need for industry-wide cooperation in his RSA Conference 2018 talk Tech Scams: Its Time to Release the Hounds. Social engineering attacks like tech support scams are so common because theyre so effectiv...

Stronger together: New Beazley collaboration enhances cyber resilience

Today’s cyberthreat landscape demands more than technical expertise: it requires a unified response team of technical responders, insurers, brokers, and legal counsel. This integrated approach is key to building long-term cyber resilience to help your organization anticipate, withstand, recover...

Surface expands its Secured-core portfolio with the new Surface Laptop 4 powered by AMD Ryzen™ Mobile Processors

As operating systems are becoming more secure and resistant to compromise, advanced vectors like firmware, kernel and hardware direct memory access DMA have emerged as new favored targets for threat actors. Recent trends indicate a substantial growth in the number of hardware and firmware exploit...

New Security Signals study shows firmware attacks on the rise; here’s how Microsoft is working to help eliminate this entire class of threats

Cybersecurity threats are always evolving, and today we’re seeing a new wave of advanced attacks targeting areas of computing that don’t have the protection of the cloud. New data shows that firmware attacks are on the rise, and businesses aren’t paying close enough attention to securing this...

XLM + AMSI: New runtime defense against Excel 4.0 macro malware

We have recently expanded the integration of Antimalware Scan Interface AMSI with Office 365 to include the runtime scanning of Excel 4.0 XLM macros, to help antivirus solutions tackle the increase in attacks that use malicious XLM macros. This integration, an example of the many security feature...

Identity at Microsoft Ignite: Strengthening Zero Trust defenses in the era of hybrid work

We’re now a year into our new reality, and two trends stand out. First, people need even more flexibility as we work, learn, and collaborate in a world without perimeters. And second, bad actors are getting even more sophisticated. They’re adding new attack vectors and combining them in new...

Microsoft brings advanced hardware security to Server and Edge with Secured-core

A cursory look at recent headlines reveals two clear trends. First, organizations around the world are embracing digital transformation using technologies across cloud and edge computing to better serve their customers and thrive in fast-paced environments. Second, attackers are constantly...

Microsoft listed as a Representative Vendor in 2020 Gartner Market Guide for Insider Risk Management Solutions

While organizations have long prioritized external cybersecurity risks, many have not paid enough attention to the risks posed by trusted insiders in their organizations. This is a mistake. Insiders often already have access to sensitive data, and the risks, whether malicious or inadvertent, can...