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.
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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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. Retain Microsoft Security Experts
Microsoft Security Experts are now available to strengthen your team with managed security services. Learn how to defend against threats with security experts.
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Imposter for hire: How fake people can gain very real access
Fake employees are an emerging cybersecurity threat. -
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. 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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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. -
Build a stronger security strategy with proactive and reactive incident response: Cyberattack Series
Find out how a cyberattack by Storm-2077 was halted faster because the Microsoft Incident Response team is both proactive and reactive at the same time. -
The art and science behind Microsoft threat hunting: Part 3
In this blog post, read how Microsoft Incident Response leverages three types of threat intelligence to enhance incident response scenarios. -
Windows Security best practices for integrating and managing security tools
We examine the recent CrowdStrike outage and provide a technical overview of the root cause.
