// #hardening
8 articles
CVE-2026-23111 Detection and Hardening Guide: Protecting Linux Environments from the nf_tables Exploit
With public proof-of-concept code available for CVE-2026-23111, security teams running Linux across production, containerised, and cloud environments need specific detection and hardening guidance. This guide covers kernel patch availability by distribution, interim mitigations, eBPF-based detection, and Kubernetes-specific containment measures.
VPN Gateway Security: Hardening the Network Perimeter Device That Attackers Target First
VPN gateways and remote access concentrators have become the most frequently exploited initial access vector in enterprise network intrusions. With critical vulnerabilities regularly disclosed in Palo Alto GlobalProtect, Citrix NetScaler, Fortinet FortiGate, and now Check Point Security Gateway, this guide covers the security hardening and monitoring posture that reduces exposure regardless of which vendor's appliance your organisation runs.
ServiceNow API Security Configuration: Access Controls, ACLs, and Endpoint Hardening to Prevent Zero-Auth Exposure
The ServiceNow API breach highlights the risk of zero-auth API endpoint exposure in SaaS ITSM platforms. ServiceNow's platform provides granular access control mechanisms — ACLs, application scope policies, and API gateway controls — that, if properly configured, limit the blast radius of similar incidents. This guide covers the core security configuration for ServiceNow REST APIs.
Oracle WebLogic T3 and IIOP Hardening: Eliminating the Attack Surface Behind CVE-2024-21182
The T3 and IIOP protocols in Oracle WebLogic Server have been the source of 15+ critical vulnerabilities over the past decade. This guide covers the configuration controls that isolate T3/IIOP from untrusted networks — the single most effective defence regardless of which WebLogic CVE is currently being exploited.
Implementing the Active Directory Tier Model: A Practical Guide for Post-Netlogon Environments
Microsoft's Active Directory Tier Model separates administrative access by privilege level to prevent credential theft from cascading into full domain compromise. CVE-2026-41089's impact in poorly segmented environments makes the Tier Model the single highest-leverage post-incident investment. This guide covers the implementation sequence for organisations starting from scratch.
Privileged Access Workstation Deployment: The Missing Piece of Most Active Directory Hardening Programmes
Privileged Access Workstations (PAWs) are the single most effective control for preventing credential theft from domain administrators. They are also the most consistently skipped step in enterprise AD hardening programmes. This guide covers a practical PAW deployment for Tier 0 domain controller administration.
Domain Controller Hardening After Netlogon CVE-2026-41089: Reducing the Attack Surface Beyond Patching
Patching CVE-2026-41089 closes the specific vulnerability, but domain controllers remain highly targeted infrastructure. This guide covers the access control, network segmentation, and monitoring controls that reduce DC attack surface against the class of unauthenticated RCE threats that Netlogon represents.
Hardening Windows Environments When No Patch Exists: Response Architecture for MiniPlasma and Similar Zero-Days
When a working proof-of-concept for a Windows privilege escalation zero-day is public and no vendor patch exists, the defender's playbook shifts from patching to attack surface reduction. Layered controls can meaningfully raise the bar even when the vulnerable component cannot be removed.