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sigma-rule489 articles
Oct 15, 2026

Silent Lynx Targets CIS Governments with Weaponized WinRAR Archives — Detection and Remediation Guide for SOC Teams

Executive Summary Between June 2025 and August 2026, the threat actor tracked as Silent Lynx ran a sustained espionage campaign against gove...

sigma-rulekql-detectionthreat-hunting
SOC & MDRRead Now
Oct 15, 2026

CVE-2026-105133 & CVE-2026-105134: AhsayCBS Exploited to Deploy Web Shells and XMRig Miners — Detection and Remediation Guide

AhsayCBS Authentication Bypass and Command Execution — What Defenders Need to Know Singapore-based Ahsay Backup has released new security up...

sigma-rulekql-detectionthreat-hunting
Vulnerability ManagementRead Now
Oct 14, 2026

Global Phishing-as-a-Service Takedown: Defending Against Industrial-Scale Social Engineering After 1 Billion Malicious Messages

Introduction Law enforcement agencies and private-sector partners have disrupted one of the largest cybercriminal ecosystems ever measured: ...

sigma-rulekql-detectionthreat-hunting
SOC & MDRRead Now
Oct 14, 2026

Malware Indicators of Compromise (IoCs): A Defender's Field Guide to Detection, Collection, and Response

Introduction Every intrusion leaves fingerprints. The question is whether your telemetry is instrumented to see them — and whether your team...

sigma-rulekql-detectionthreat-hunting
SOC & MDRRead Now
Oct 13, 2026

Nation-State and AI-Driven Threats to Critical Infrastructure: A Defender's Guide to IT/OT Asset Visibility and Hardening

The Threat Landscape Just Got Faster — and Your Asset Inventory Is the Weakest Link Tenable's latest Cybersecurity Awareness Month analysis ...

sigma-rulekql-detectionthreat-hunting
Vulnerability ManagementRead Now
Oct 13, 2026

Critical MarkLogic Server Privilege Escalation: Delegated Manager-to-Admin Flaws — Patch 11.3.7 / 12.1.0 Now

Introduction Progress Software has disclosed 31 vulnerabilities in MarkLogic Server — its enterprise multi-model NoSQL database — and five o...

sigma-rulekql-detectionthreat-hunting
Vulnerability ManagementRead Now
Oct 12, 2026

Norway Fines Microsoft-Owned Xandr $9.6M Over Grindr Data Sharing — Defending Against Unlawful Ad-Tech Data Flows

Introduction Norway's Data Protection Authority (Datatilsynet) has fined Xandr — the advertising technology company owned by Microsoft — NOK...

sigma-rulekql-detectionthreat-hunting
SOC & MDRRead Now
Oct 12, 2026

Bring Your Own Agent: Detecting and Containing Unmanaged AI Agents (Meta Muse, Instinct) in Your Enterprise

Bring Your Own Agent: The Shadow AI Problem Has an Autonomous Face Now The personal AI agent rollout is going about as smoothly as most of u...

sigma-rulekql-detectionthreat-hunting
SOC & MDRRead Now
Oct 12, 2026

ShinyHunters Crackdown: Defending SaaS and Cloud Platforms Against Vishing-Driven Data Extortion Campaigns

The Net Tightens — But the Playbook Is Still in Circulation The FBI's continued pressure campaign against ShinyHunters has produced another ...

sigma-rulekql-detectionthreat-hunting
Incident ResponseRead Now
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