Cybersecurity IR Workshop: The workshop you shouldn’t miss
Cyber resilience starts before a crisis. Gain practical insights from DART to strengthen readiness and response.
Incident response
Incident response is the process of detecting, investigating, and responding to cyberattacks, security breaches, or IT incidents. Explore the latest trends and intelligence-driven strategies that help you prevent future attacks.
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Microsoft named a Leader in the 2026 IDC MarketScape for MDR/MXDR for the Enterprise
Microsoft is named a Leader in the 2026 IDC MarketScape for MDR services. -
Better security starts with better questions
Learn how better questions, trusted AI, and human judgment help security leaders make confident decisions and build resilient systems. -
One intrusion, two cyberattackers: Uncovering parallel threat activity
Ransomware case reveals two parallel threat actors, blending tactics and evasion—showing why isolated signals can often miss modern, overlapping cyberattacks. Retain Microsoft Defender Experts
Microsoft Defender Experts are available to strengthen your teams with expertise when and where you need it. Learn how to elevate your security with expert-led services.
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Help on the line: How a Microsoft Teams support call led to compromise
A DART investigation into a Microsoft Teams voice phishing attack shows how deception and trusted tools can enable identity-led intrusions and how to stop them. -
Explore the latest Microsoft Incident Response proactive services for enhanced resilience
The new proactive services from Microsoft Incident Response turn security uncertainty into readiness with expert‑led preparation and advanced intelligence. -
Introducing the Microsoft Defender Experts Suite: Elevate your security with expert-led services
Announcing Microsoft Defender Experts Suite, a integrated set of expert-led services that helps security teams keep pace with modern cyberattacks. -
Imposter for hire: How fake people can gain very real access
Fake employees are an emerging cybersecurity threat. Secure and verify every identity with Microsoft Entra
Microsoft Entra expands beyond identity and access management with new product categories such as cloud infrastructure entitlement management (CIEM) and decentralized identity.
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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. -
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. -
Elevate your protection with expanded Microsoft Defender Experts coverage
Defender Experts now offers 24/7, expert-driven protection for cloud workloads, beginning with hybrid and multicloud servers in Microsoft Defender for Cloud. -
StilachiRAT analysis: From system reconnaissance to cryptocurrency theft
Microsoft Incident Response uncovered a novel remote access trojan (RAT) named StilachiRAT, which demonstrates sophisticated techniques to evade detection, persist in the target environment, and exfiltrate sensitive data.
