Kql
Lessons from the field. Always landing on my feet.
Detecting Infostealer Session Hijacking with Microsoft Sentinel
Nearly 70% of incidents in the Americas now begin with stolen or misused accounts. Infostealers are the engine behind that number – families like Lumma, RedLine, and Vidar export browser cookies and session tokens directly from the victim’s machine, …
Investigate Hidden Privilege Paths with Microsoft Sentinel Data Federation and Custom Graphs
After a compromised service principal incident, the first triage question is always the same: “What else can this identity reach?” The answer usually lives outside Sentinel, buried in entitlement exports, RBAC snapshots, or asset inventories that …
Building Custom Sentinel Connectors in One Click with CCF Push
Getting custom data into Microsoft Sentinel has traditionally required a lot of moving parts. You need a Data Collection Endpoint, a Data Collection Rule, an Entra app registration with a client secret, RBAC role assignments, a custom table …
AKS Runtime Security: Binary Drift, Anti-Malware & Gated Deployment with Defender for Cloud
In December, I published a post on securing the container supply chain — SBOM generation, image signing, and build provenance with GitHub Actions. That covered build-time security: making sure the image you ship is the image you built. But what …
Detecting OAuth Redirect Abuse with Microsoft Sentinel and Entra ID
On March 2, 2026, Microsoft published an advisory on OAuth redirection abuse enabling phishing and malware delivery. Microsoft described phishing-led campaigns where attackers register OAuth apps with attacker-controlled redirect URIs, then send …
The February 2026 Microsoft Sentinel Drop: UEBA Essentials, Copilot Connector, and 9 New GA Connectors
February 2026 brought one of the more substantial Sentinel drops in recent memory. UEBA Essentials hit v3.0.6 with a refined workbook and more than 30 hunting queries (including multi-cloud detections shipped in earlier releases), the M365 Copilot …