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Microsoft Security Blog - 1

2026 (12)

March (6)

security: Applying security fundamentals to AI: Practical advice for CISOs

Microsoft Security Blog

2026-03-31

Microsoft published guidance for CISOs on securing AI systems by applying established security fundamentals. The post focuses on risk management and practical security principles for AI-powered environments.

security: Governing AI agent behavior: Aligning user, developer, role, and organizational intent

Microsoft Security Blog

2026-03-24

The report discusses how to govern AI agent behavior by aligning user, developer, role, and organizational intent for secure enterprise AI adoption.

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

Microsoft Security Blog

2026-03-12

Microsoft reports that Storm-2561 has been using SEO poisoning to promote fake VPN client downloads that install signed trojans and steal VPN credentials. The activity has been observed since 2025 and relies on impersonating trusted brands and abusing legitimate services.

security: Detecting and analyzing prompt abuse in AI tools

Microsoft Security Blog

2026-03-12

Microsoft describes how hidden instructions in content can influence AI tool behavior and uses a scenario to illustrate prompt injection. The post emphasizes the need for human oversight and a structured response playbook.

security: AI as tradecraft: How threat actors operationalize AI

Microsoft Security Blog

2026-03-06

Microsoft reports that threat actors are using AI to scale and sustain malicious operations, accelerating tradecraft and increasing defender risk. It cites recent activity involving North Korean groups Jasper Sleet and Coral Sleet (formerly Storm-1877).

security: Women’s History Month: Encouraging women in cybersecurity at every career stage

Microsoft Security Blog

2026-03-05

Microsoft Security Blog post for Women’s History Month focusing on how to support and encourage women in cybersecurity across different career stages.

February (3)

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

Microsoft Security Blog

2026-02-10

Microsoft Security Blog post promoting its Cyber Pulse report, focused on cybersecurity risks related to active AI agents and the need for observability, governance, and security.

security: The security implementation gap: Why Microsoft is supporting Operation Winter SHIELD

Microsoft Security Blog

2026-02-05

Microsoft explains that many incidents stem from inconsistent implementation of known security controls and describes its support for Operation Winter SHIELD to help organizations close this “implementation gap.”

security: Infostealers without borders: macOS, Python stealers, and platform abuse

Microsoft Security Blog

2026-02-02

Microsoft describes recent infostealer activity targeting macOS, highlighting Python-based stealers and distribution techniques that abuse trusted platforms and common utilities.

January (3)

security: Case study: Securing AI application supply chains

Microsoft Security Blog

2026-01-30

The article argues that securing AI-powered applications requires a holistic supply-chain approach beyond protecting prompts, including monitoring frameworks, SDKs, and orchestration layers, plus enforcing strong runtime controls so security teams can detect, respond to, and remediate risks before exploitation.

security: Turning threat reports into detection insights with AI

Microsoft Security Blog

2026-01-29

The Microsoft Security Blog describes an AI-assisted workflow that converts lengthy incident reports and threat writeups into actionable detections by automatically extracting TTPs, mapping them to existing detection coverage, and flagging gaps — completing in minutes instead of days while preserving human expert review.

security: New Microsoft Data Security Index report explores secure AI adoption to protect sensitive data

Microsoft Security Blog

2026-01-29

The 2026 Microsoft Data Security Index examines how organizations can harness generative AI while protecting sensitive data, providing insights on secure AI adoption, governance, controls, and risk mitigation.