Microsoft shifts to a new threat actor naming taxonomy

April 19, 2023 update – We have published a JSON file mapping old threat actor names with their new names in the updated taxonomy, summarized here: https://aka.ms/threatactors. We also added hunting queries that Microsoft customers can use while transitioning to the new taxonomy. See the Resource...

Microsoft achieves first native Cloud Data Management Capabilities certification

Today, Microsoft announced the successful completion of the Cloud Data Management Capabilities CDMC 14 Key Controls and Automations certification, conducted by Accenture and Avanade, accelerating the industry’s move to the cloud. The 14 Key Controls and Automations are a part of the EDM Council’s...

Microsoft is named a Leader in the 2022 Gartner® Magic Quadrant™ for Endpoint Protection Platforms

The state of cybersecurity continues to challenge defenders around the world. With hybrid work here to stay and emerging trends like Ransomware as a Service, organizations need a partner that empowers them with not only modern endpoint security but an integrated solution that helps security...

SEC cyber risk management rule—a security and compliance opportunity

In my practice as a Microsoft Global Black Belt, I focus on the technical and business enablement aspects of protecting organizations from cyber threats with tools like Microsoft 365 Defender, Microsoft Purview and Microsoft Sentinel. In my role as a board member for another publicly traded...

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...

New “Prestige” ransomware impacts organizations in Ukraine and Poland

The Microsoft Threat Intelligence Center MSTIC has identified evidence of a novel ransomware campaign targeting organizations in the transportation and related logistics industries in Ukraine and Poland utilizing a previously unidentified ransomware payload. We observed this new ransomware, which...

Cybersecurity awareness tips from Microsoft to empower your team to #BeCyberSmart

October is Cybersecurity Awareness Month, and I’m excited about what Microsoft and our partners in the industry have planned to help everyone stay CyberSmart. 2022 may have offered some respite from the previous year’s rush to enable a remote and hybrid workforce, but the increased use of persona...

How one Microsoft product manager acts as champion for identity security

A technology career embodies the ancient Roman saying that “luck happens when preparation meets opportunity.” Few industries are as dynamic, fast-paced, or intense as technology. With so many challenges to solve, opportunities are everywhere, but as I’ve learned myself through the years, the best...

Hive ransomware gets upgrades in Rust

Hive ransomware is only about one year old, having been first observed in June 2021, but it has grown into one of the most prevalent ransomware payloads in the ransomware-as-a-service RaaS ecosystem. With its latest variant carrying several major upgrades, Hive also proves it’s one of the fastest...

4 breakthrough ideas for compliance and data security

Compliance management will never be easy, but there are ways to make it simpler and more transparent. Every year, organizations confront a growing volume and diversity of data and ever-evolving industry and government regulations. But the answer to more data, more devices, and more regulations...

Microsoft collaborates with Tenable to support federal cybersecurity efforts

On May 12, 2021, the White House issued Presidential Executive Order EO 14028 to establish cybersecurity as a national priority.1 As part of this effort, the White House has called for greater public and private sector collaboration to address the evolving threats facing federal agencies. In the...

Using Python to unearth a goldmine of threat intelligence from leaked chat logs

Dealing with a great amount of data can be time consuming, thus using Python can be very powerful to help analysts sort information and extract the most relevant data for their investigation. The open-source tools library, MSTICPy, for example, is a Python tool dedicated to threat intelligence. I...

Microsoft protects against human-operated ransomware across the full attack chain in the 2022 MITRE Engenuity ATT&CK® Evaluations

For the fourth year in a row, the independent MITRE Engenuity Adversarial Tactics, Techniques, and Common Knowledge ATT&CK® Evaluations demonstrated Microsoft’s strong detection and protection capabilities thanks to our multi-platform extended detection and response XDR defenses. The ever-evolvin...

What’s Next in Security from Microsoft

One of the biggest challenges in security today is complexity. Not only is there an ever-growing number of threats, but many organizations are defending their companies with a patchwork of security solutions that don’t work well together. This piecemeal approach is costly, less secure, and hinder...

Microsoft Zero Trust solutions deliver 92 percent return on investment, says new Forrester study

In the last two years, we’ve seen a staggering increase in the adoption of cloud-based services, remote work solutions, bring your own device BYOD, and IoT devices as organizations digitally transform themselves to enable a hybrid workforce.1 Zero Trust has become the essential security strategy...

How Open Systems uses Microsoft tools to improve security maturity

This blog post is part of the Microsoft Intelligent Security Association guest blog series. Learn more about MISA. We’ve all seen it happen—an organization has all the top-notch security tools in place and still, they get breached. In today’s rapidly evolving threat landscape, complexity leads to...

HTML smuggling surges: Highly evasive loader technique increasingly used in banking malware, targeted attacks

HTML smuggling, a highly evasive malware delivery technique that leverages legitimate HTML5 and JavaScript features, is increasingly used in email campaigns that deploy banking malware, remote access Trojans RATs, and other payloads related to targeted attacks. Notably, this technique was observe...

Microsoft achieves a Leader placement in Forrester Wave for XDR

We are excited to share that Microsoft has been named a Leader in The Forrester New Wave: Extended Detection and Response XDR, Q4, 2021,1 receiving one of the highest scores in the strategy category. Microsoft 365 Defender was rated as “differentiated” in seven criteria including detection,...

Strategies, tools, and frameworks for building an effective threat intelligence team

How to think about building a threat intelligence program 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...

Announcing new capabilities for the Microsoft Azure Security Center

Microsoft Azure Security Center—the central hub for monitoring and protecting against related incidents within Azure—has released new capabilities. The following features—announced at Hannover Messe 2019—are now generally available for the Azure Security Center: Advanced Threat Protection for Azu...

Building a world without passwords

Nobody likes passwords. They are inconvenient, insecure, and expensive. In fact, we dislike them so much that weve been busy at work trying to create a world without them a world without passwords. In this blog, we will provide a brief insight into how we at Microsoft think about solving this...

First things first: Envisioning your security deployment

This blog post is part of a series that responds to common questions we receive from customers about deployment of Microsoft 365 Security solutions. In this series youll find context, answers, and guidance for deployment and driving adoption within your organization. Check out our last blog...

How Microsoft tools and partners support GDPR compliance

This post is authored by Daniel Grabski,Executive Security Advisor, Microsoft Enterprise Cybersecurity Group. As an Executive Security Advisor for enterprises in Europe and the Middle East, I regularly engage with Chief Information Security Officers CISOs, Chief Information Officers CIOs and Data...

Impersonating IT support: how threat actors turn a remote session into enterprise-wide access

In this article 1. Risk to enterprise environments 2. Attack chain overview 3. Mitigation and response recommendations 4. Learn more Microsoft Threat Intelligence has observed a human-operated intrusion campaign that abuses Microsoft Teams external collaboration to impersonate IT or helpdesk...

Hunting MacSync Stealer infrastructure through behavioral pivots

In this article 1. Activity overview 2. Discovery of additional rotating infrastructure 3. Attack chain overview 4. Mitigation and protection guidance 5. References 6. Learn more MacSync Stealer is a macOS-focused information stealer that relies on changing infrastructure to deliver payloads,...

Securing CI/CD in an agentic world: Claude Code Github action case

Microsoft Threat Intelligence discovered that Anthropic's Claude Code GitHub Action could expose CI/CD workflow secrets when AI agents process untrusted GitHub content, including issue bodies, pull request descriptions, and comments. We found that while Claude Code Action supported environment...

Microsoft Security success stories: How St. Luke’s and ManpowerGroup are securing AI foundations

AI is reshaping how work gets done—and how risks emerge across cloud, data, identity, and more. Many organizations want AI-powered productivity, but their security foundations aren’t yet built for it. As organizations move toward AI-powered operating models, security becomes the critical enabler ...

Guidance for detecting, investigating, and defending against the Trivy supply chain compromise

In this article 1. Analyzing the Trivy supply chain compromise 2. Detection and investigation 3. Mitigation and protection guidance 4. Advanced hunting queries 5. References 6. Learn more On March 19, 2026, Trivy, Aqua Security’s widely used open-source vulnerability scanner, was reported to have...

Storm-2561 uses SEO poisoning to distribute fake VPN clients for credential theft

In this article 1. From search to stolen credentials: Storm-2561 attack chain 2. Defending against credential theft campaigns 3. Microsoft Defender detection and hunting guidance 4. Indicators of compromise In mid-January 2026, Microsoft Defender Experts identified a credential theft campaign tha...

OAuth redirection abuse enables phishing and malware delivery

Microsoft observed phishing-led exploitation of OAuth’s by-design redirection mechanisms. The activity targets government and public-sector organizations and uses silent OAuth authentication flows and intentionally invalid scopes to redirect victims to attacker-controlled infrastructure without...

80% of Fortune 500 use active AI Agents: Observability, governance, and security shape the new frontier

Today, Microsoft is releasing the new Cyber Pulse report to provide leaders with straightforward, practical insights and guidance on new cybersecurity risks. One of today’s most pressing concerns is the governance of AI and autonomous agents. AI agents are scaling faster than some companies can s...

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...

Moonstone Sleet emerges as new North Korean threat actor with new bag of tricks

Microsoft has identified a new North Korean threat actor, now tracked as Moonstone Sleet formerly Storm-1789, that uses both a combination of many tried-and-true techniques used by other North Korean threat actors and unique attack methodologies to target companies for its financial and...

Microsoft introduces passkeys for consumer accounts

Ten years ago, Microsoft envisioned a bold future: a world free of passwords. Every year, we celebrate World Password Day by updating you on our progress toward eliminating passwords for good. Today, we’re announcing passkey support for Microsoft consumer accounts, the next step toward our vision...

Automatic disruption of human-operated attacks through containment of compromised user accounts

Our experience and insights from real-world incidents tell us that the swift containment of compromised user accounts is key to disrupting hands-on-keyboard attacks, especially those that involve human-operated ransomware. In these attacks, lateral movement follows initial access as the next...

Forrester names Microsoft a Leader in the 2023 Zero Trust Platform Providers Wave™ report

Microsoft is proud to be recognized as a Leader in the Forrester Wave™: Zero Trust Platform Providers, Q3 2023 report. At Microsoft, we understand modernizing security is a complex task in this era of ever-evolving cyberthreats and complex digital environments. Serious threats have necessitated a...

XDR meets IAM: Comprehensive identity threat detection and response with Microsoft

Identity has become the corporate security perimeter. The average organization used 130 different cloud applications in 2022. That’s up 18 percent from 2021 alone.1 And as organizations continue to embrace digital transformation and enable remote work, they look to identity and access management...

Do more with less with Microsoft Security—3 strategies to get you started

Relentless bad actors, evolving attack tactics, and numerous surfaces and endpoints that attackers may try to exploit. With the average cost of a data breach reaching an all-time high of USD4.35 million in 2022,1 protecting your people and data from adversaries is more important than ever. Plus,...

Microsoft publishes new report on holistic insider risk management

The risk landscape for organizations has changed significantly in the past few years. The amount of data captured, copied, and consumed is expected to grow to more than 180 zettabytes through 2025.1 Traditional ways of identifying and mitigating risks don’t always work. Historically, organization...

ZINC weaponizing open-source software

In recent months, Microsoft has detected a wide range of social engineering campaigns using weaponized legitimate open-source software by an actor we track as ZINC. Microsoft Threat Intelligence Center MSTIC observed activity targeting employees in organizations across multiple industries includi...

Disrupting SEABORGIUM’s ongoing phishing operations

The Microsoft Threat Intelligence Center MSTIC has observed and taken actions to disrupt campaigns launched by SEABORGIUM, an actor Microsoft has tracked since 2017. SEABORGIUM is a threat actor that originates from Russia, with objectives and victimology that align closely with Russian state...

The future of compliance and data governance is here: Introducing Microsoft Purview

The worldwide shift to a hybrid workplace has pushed us all to embrace ubiquitous connectivity. Those new connections have helped us become more collaborative; routinely editing and sharing documents in real-time from wherever we happen to be working. Instant messaging went from being a tool of...

Cyber Signals: Defending against cyber threats with the latest research, insights, and trends

We’re excited to introduce Cyber Signals, a cyber threat intelligence brief informed by the latest Microsoft threat data and research. This content, which will be released quarterly, offers an expert perspective into the current threat landscape, discussing trending tactics, techniques, and...

New research shows IoT and OT innovation is critical to business but comes with significant risks

The need for much improved IoT and operational technology OT cybersecurity became clearer this year with recent attacks on network devices,1 surveillance systems,2 an oil pipeline,3 and a water treatment facility,4 to name a few examples. To better understand the challenges customers are facing,...

Microsoft is recognized as a Leader in the 2021 Forrester Wave for Unified Endpoint Management

Microsoft is honored to be recognized as a Leader in The Forrester Wave: Unified Endpoint Management UEM, Q4 2021 report for our ability to help customers on their path to modern endpoint management. Microsoft Endpoint Manager—which brings together Microsoft Intune for cloud endpoint management a...

How Microsoft Defender for IoT can secure your IoT devices

Cybersecurity threats are always evolving, and today we’re seeing a new wave of advanced attacks specifically targeting IoT devices used in enterprise environments as well as operational technology OT devices used in industrial systems and critical infrastructure like ICS/SCADA. It’s not surprisi...

Accelerate your adoption of SIEM using Azure Sentinel and a new offer from Microsoft

Take advantage of the efficiency benefits of Cloud-native SIEM using Azure Sentinel Today, security needs are evolving faster than ever—and the importance of being agile and cost-effective has never been clearer. Security teams need to get more done, faster, with less budget. On-premises security...

Updates for Microsoft 365 help strengthen data privacy

As data continues to grow exponentially and travel across organizational boundaries, privacy and compliance professionals play an increasingly strategic role within organizations. Several updates—announced today—for Microsoft 365 provide organizations with more control and options to strengthen...

Defending critical infrastructure is imperative

The Cybersecurity Tech Accord’s upcoming webinar and the importance of public-private partnership Today, cyberattacks from increasingly sophisticated actors threaten organizations across every sector, and whether a Fortune 500 company or a local bakery, organizations of all sizes need to take ste...

Detecting reflective DLL loading with Windows Defender ATP

Today's attacks put emphasis on leaving little, if any, forensic evidence to maintain stealth and achieve persistence. Attackers use methods that allow exploits to stay resident within an exploited process or migrate to a long-lived process without ever creating or relying on a file on disk. In...