Latest news and updates about Security.
A new Forrester Total Economic Impact study found that organizations consolidating on Microsoft Security could see a projected 124% ROI over three years. The report highlights lower breach risk, reduced remediation costs, lower technology spend, and productivity gains as key reasons unified security platforms matter in the AI era.
Microsoft has detailed a large-scale npm supply chain compromise affecting more than 140 Mastra packages after an attacker took over a maintainer account and injected a malicious dependency. The attack is significant because the payload executed during npm install, putting developer workstations and CI/CD pipelines at risk even if the package was never directly used in code.
Microsoft has detailed a Windows-based crypto clipper campaign that uses malicious shortcut files, a bundled Tor client, and worm-like USB propagation to steal wallet data and maintain persistence. The threat matters because it combines clipboard theft, screenshot exfiltration, and remote code execution with stealthy Tor-based command and control, making behavioral detection critical for defenders.
Microsoft says its MDASH multi-agent AI security system has moved from research into production workflows across Windows, Azure, and identity engineering teams. The platform now feeds validated findings into GitHub Advanced Security, Azure DevOps, and Microsoft Defender, helping teams discover and remediate high-impact vulnerabilities earlier in the development lifecycle.
Microsoft has been named a Leader in The Forrester Wave for Extended Detection and Response Platforms, Q2 2026, with the highest strategy score and the only top vision score. For security teams, the news highlights Microsoft's momentum in XDR, threat intelligence, attack disruption, and Security Copilot capabilities across identity, cloud, endpoints, and SIEM workflows.
Microsoft says AI is accelerating identity-based cyberattacks and is responding with tighter integration between Entra and Defender. Key updates include a unified identity risk score, an improved Entra ID Protection experience, new least-privilege response roles, and smarter Conditional Access optimization to help security teams detect and contain threats faster.
Microsoft has shared one year of real-world email security benchmarking data showing Defender consistently leading in pre-delivery detection versus SEG vendors. The latest results also show ICES tools add the most value for promotional and bulk email, while Defender now handles the vast majority of post-delivery malicious remediation.
Microsoft has released ASSERT, an open-source framework that converts natural-language behavior requirements into executable evaluation pipelines for AI models, agents, and applications. The tool helps teams build behavior-specific tests faster, improve regression coverage, and better validate whether AI systems follow product policies and safety expectations.
Microsoft has published a new investigator playbook to help security teams reconstruct AI-related activity across Microsoft 365 Copilot and Azure AI services. The guidance brings together telemetry, KQL queries, schema references, and detection logic across Purview, Defender, and Sentinel so investigators can move from isolated signals to a clear incident timeline.
Microsoft Threat Intelligence reports a rise in phishing, malvertising, and SEO-driven attacks that abuse popular AI brands like ChatGPT, Claude, Copilot, and DeepSeek as social engineering lures. The campaigns use familiar tactics such as urgent payment notices, fake policy violations, and malicious installers to steal credentials, payment data, and deploy malware, making user awareness and layered defenses critical.
Microsoft Threat Intelligence found that Anthropic’s Claude Code GitHub Action could expose CI/CD secrets when AI agents process untrusted GitHub content such as issues, pull requests, and comments. Anthropic fixed the issue in Claude Code 2.1.128, but the research highlights broader risks for any AI-enabled workflow with access to secrets, file reads, or outbound communication.
Microsoft has updated its taxonomy of failure modes in agentic AI systems after a year of red teaming against real-world deployments. The v2.0 framework adds seven new risk categories and expanded mitigations, giving security teams a more practical model for assessing agentic AI threats such as MCP/plugin abuse, goal hijacking, and session context contamination.