Microsoft Defender for Cloud

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March 6

21 min read

AI as tradecraft: How threat actors operationalize AI

Threat actors are operationalizing AI to scale and sustain malicious activity, accelerating tradecraft and increasing risk for defenders, as illustrated by recent activity from North Korean groups such as Jasper Sleet and Coral Sleet (formerly Storm-1877).
January 13

7 min read

How Microsoft builds privacy and security to work hand-in-hand

Learn how Microsoft unites privacy and security through advanced tools and global compliance to protect data and build trust.
December 15, 2025

16 min read

Defending against the CVE-2025-55182 (React2Shell) vulnerability in React Server Components

CVE-2025-55182 (also referred to as React2Shell and includes CVE-2025-66478, which was merged into it) is a critical pre-authentication remote code execution (RCE) vulnerability affecting React Server Components and related frameworks.
December 9, 2025

10 min read

Shai-Hulud 2.0: Guidance for detecting, investigating, and defending against the supply chain attack

The Shai‑Hulud 2.0 supply chain attack represents one of the most significant cloud-native ecosystem compromises observed recently.
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November 6, 2025

4 min read

New IDC research highlights a major cloud security shift

New IDC research shows why CISOs must move toward AI-powered, integrated platforms like CNAPP, XDR, and SIEM to reduce risk, cut complexity, and strengthen resilience.
October 20, 2025

20 min read

Inside the attack chain: Threat activity targeting Azure Blob Storage

Azure Blob Storage is a high-value target for threat actors due to its critical role in storing and managing massive amounts of unstructured data at scale across diverse workloads and is increasingly targeted through sophisticated attack chains that exploit misconfigurations, exposed credentials, and evolving cloud tactics.
August 27, 2025

23 min read

Storm-0501’s evolving techniques lead to cloud-based ransomware

Financially motivated threat actor Storm-0501 has continuously evolved their campaigns to achieve sharpened focus on cloud-based tactics, techniques, and procedures (TTPs).
May 27, 2025

16 min read

New Russia-affiliated actor Void Blizzard targets critical sectors for espionage

Microsoft Threat Intelligence has discovered a cluster of worldwide cloud abuse activity conducted by a threat actor we track as Void Blizzard, who we assess with high confidence is Russia-affiliated and has been active since at least April 2024.
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April 23, 2025

14 min read

Understanding the threat landscape for Kubernetes and containerized assets

The dynamic nature of containers can make it challenging for security teams to detect runtime anomalies or pinpoint the source of a security incident, presenting an opportunity for attackers to stay undetected.
April 16, 2025

12 min read

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

Microsoft maintains a continuous effort to protect its platforms and customers from fraud and abuse.
March 6, 2025

32 min read

Malvertising campaign leads to info stealers hosted on GitHub

Microsoft detected a large-scale malvertising campaign in early December 2024 that impacted nearly one million devices globally.
February 13, 2025

6 min read

Securing DeepSeek and other AI systems with Microsoft Security

Microsoft Security provides cyberthreat protection, posture management, data security, compliance and governance, and AI safety, to secure AI applications that you build and use.

Microsoft Defender for Cloud

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