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sigma-rule489 articles
Oct 8, 2026

UAC-0099 ASHVEIN RAT: Detecting HTML-Weaponized C2 and .NET Infostealer Activity Against Government Targets

A New RAT in an Active Espionage Campaign Security researchers at TrendAI have attributed a previously undocumented .NET infostealer and rem...

sigma-rulekql-detectionthreat-hunting
SOC & MDRRead Now
Oct 8, 2026

$10M Reward for HAFNIUM Operator Zhang Yu: Defending Microsoft Exchange Against Silk Typhoon Tradecraft — Detection and Hardening Guide

Introduction The U.S. State Department's Rewards for Justice program is offering up to $10 million for information leading to the identifica...

sigma-rulekql-detectionthreat-hunting
Incident ResponseRead Now
Oct 7, 2026

ccTLD Registry Breach: Hackers Hijack Google Domains in Ghana, American Samoa, and Sierra Leone — DNS and Certificate Defense Guide

When attackers compromise the registry operator for an entire country-code top-level domain, every organization registered under that TLD in...

sigma-rulekql-detectionthreat-hunting
Incident ResponseRead Now
Oct 7, 2026

Critical Unpatched LMCache RCE Exposes LLM Infrastructure — Detection and Mitigation Guide

Introduction A critical, currently unpatched vulnerability in LMCache — the open-source KV-cache acceleration layer used to speed up large l...

sigma-rulekql-detectionthreat-hunting
Vulnerability ManagementRead Now
Oct 7, 2026

UAC-0277 Fake Cloudflare Verification Pages Deliver LunexStealer: Detection and Response Guide

Introduction The Computer Emergency Response Team of Ukraine (CERT-UA) has identified more than 100 compromised websites injected with malic...

sigma-rulekql-detectionthreat-hunting
SOC & MDRRead Now
Oct 6, 2026

CrowdStrike Falcon Data Security for SaaS: Defending Sensitive Data in Microsoft 365 — A Practitioner's Guide

The Problem Every M365 Shop Has — Whether They Admit It or Not CrowdStrike has announced Falcon Data Security for SaaS, extending its data s...

sigma-rulekql-detectionthreat-hunting
Platform & AutomationRead Now
Oct 5, 2026

CrowdStrike Falcon Cloud Security: Third-Party App Insights and AI-Enhanced Remediation — A Defender's Guide to Operationalizing Cloud Risk Visibility

Introduction CrowdStrike has announced two significant enhancements to Falcon Cloud Security: Third-Party App Insights and AI-Enhanced Remed...

sigma-rulekql-detectionthreat-hunting
Platform & AutomationRead Now
Oct 5, 2026

The Credential Layer Is Expanding: A Defender's Guide to Detecting and Remediating Secrets Sprawl in 2026

Introduction Every modern enterprise runs on credentials. API keys, OAuth tokens, service account secrets, database connection strings, SSH ...

sigma-rulekql-detectionthreat-hunting
Vulnerability ManagementRead Now
Oct 5, 2026

Alleged ShinyHunters Leader 'Rey' Arrested in Jordan: What the Takedown Means for Cloud Extortion Defense

Alleged ShinyHunters Leader 'Rey' Arrested in Jordan: What the Takedown Means for Cloud Extortion Defense Law enforcement has reportedly arr...

sigma-rulekql-detectionthreat-hunting
Incident ResponseRead Now
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