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May 14 18 min read

Kazuar: Anatomy of a nation-state botnet

Kazuar, a sophisticated malware family attributed to the Russian state actor Secret Blizzard, has been under constant development for years and continues to evolve in support of espionage-focused operations.
May 14 7 min read

When configuration becomes a vulnerability: Exploitable misconfigurations in AI apps

Exposed UIs, weak authentication, and risky defaults could turn cloud-native AI apps on Kubernetes into potential targets by threat actors.
May 12 9 min read

Accelerating detection engineering using AI-assisted synthetic attack logs generation

What if you could generate realistic attack telemetry on demand? Explore research methods that translate attacker behaviors (TTPs) into synthetic logs that can trigger detections at scale and without sensitive data.
May 12 11 min read

Undermining the trust boundary: Investigating a stealthy intrusion through third-party compromise

Microsoft Incident Response investigated an attack operated through legitimate and trusted administrative mechanisms to blend seamlessly into routine operations and remain undetected demonstrating that intrusions have increasingly avoided using noisy exploits, obvious malware, or custom tooling, instead leveraging systems that organizations already trust within their environments.
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May 8 5 min read

Active attack: Dirty Frag Linux vulnerability expands post-compromise risk

Dirty Frag is a newly disclosed Linux local privilege escalation vulnerability affecting kernel networking and memory-fragment handling components including esp4, esp6, and rxrpc.
May 7 13 min read

When prompts become shells: RCE vulnerabilities in AI agent frameworks

New research exposes how prompt injection in AI agent frameworks can lead to remote code execution.
May 6 20 min read

ClickFix campaign uses fake macOS utilities lures to deliver infostealers

Threat actors are targeting macOS users with fake utility fixes that trick them into running malicious Terminal commands.
May 4 8 min read

Breaking the code: Multi-stage ‘code of conduct’ phishing campaign leads to AiTM token compromise

Microsoft Defender Research observed a large-scale credential theft campaign that exemplifies this trend, using code of conduct-themed lures, a multi-step attack chain, and legitimate email services to distribute fully authenticated messages from attacker-controlled domains.
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May 1 6 min read

CVE-2026-31431: Copy Fail vulnerability enables Linux root privilege escalation across cloud environments

A high-severity Linux vulnerability, “Copy Fail” (CVE-2026-31431), enables root privilege escalation across cloud environments and Kubernetes workloads.
April 30 15 min read

Email threat landscape: Q1 2026 trends and insights

In early 2026, email threats increased with a rise in credential phishing, QR code phishing, and CAPTCHA-gated campaigns, highlighted by Microsoft’s disruption of the Tycoon2FA phishing platform which led to a 15% volume decrease and shifts in threat actor tactics.
April 28 13 min read

Simplifying AWS defense with Microsoft Sentinel UEBA

Learn how Microsoft Sentinel UEBA helps defenders distinguish benign AWS activity from attacker behavior by enriching raw CloudTrail logs with clear, binary behavioral signals derived from baseline user, peer, and device behavior patterns.
April 21 9 min read

Detection strategies across cloud and identities against infiltrating IT workers

The shift to remote and hybrid work since the pandemic expanded global hiring and accelerated digital onboarding, increasing reliance on online identity verification and remote access.