Linux auditd Deep Dive: Rules, ausearch, and SIEM Integration in 2026
A hands-on auditd guide for 2026: write persistent audit.rules, search events with ausearch, ship records to Wazuh, Elastic, or Splunk, and tune performance.
Articles by Editorial Team
Linux USB Security Hardening: USBGuard, udev Rules, and BadUSB Attack Defense (2026)
A practical, layered guide to Linux USB security in 2026: block rogue devices with USBGuard, udev rules, and kernel module blacklisting. Includes BadUSB defense, audit logging, and SIEM integration.
Confidential Computing on Linux: AMD SEV-SNP and Intel TDX with Remote Attestation in 2026
Deploy confidential VMs on Linux with AMD SEV-SNP and Intel TDX. Covers BIOS setup, QEMU launch flags, remote attestation with snpguest and configfs-tsm, attested LUKS unlock, and an operational hardening checklist for production workloads in 2026.
CrowdSec on Linux: The Modern fail2ban Alternative with Collaborative Threat Intelligence
A practical 2026 guide to CrowdSec on Linux: architecture, install on Debian/Ubuntu/RHEL, nftables and Nginx bouncers, custom scenarios, multi-server LAPI, and a clean fail2ban migration path.
osquery for Linux Security: Threat Hunting, Fleet Monitoring, and SIEM Integration in 2026
osquery turns your Linux fleet into a SQL-queryable database for real-time threat hunting and endpoint telemetry. This practical guide walks through osquery 5.22 deployment, high-value security queries, FleetDM at scale, SIEM integration, and a frank take on osquery vs auditd in 2026.
Hardening Your Linux CI/CD Pipeline: DevSecOps Security from Runners to Production
A practical guide to hardening Linux CI/CD pipelines against supply chain attacks, runner compromises, and credential theft — covering ephemeral runners, rootless container builds, automated SAST/DAST/SCA scanning, Sigstore image signing, and OIDC-based secrets management with working code examples.
Linux Security Auditing with Lynis: Custom Profiles, Automation, and Compliance Workflows
Set up Lynis 3.1.5 for continuous Linux security auditing — build custom profiles, automate fleet-wide scans with Ansible, integrate CI/CD security gates, and map findings to CIS, PCI DSS, and HIPAA compliance frameworks.
Nginx Security Hardening on Linux: TLS 1.3, ModSecurity WAF, Rate Limiting, and Systemd Sandboxing
A hands-on guide to hardening Nginx on Linux with TLS 1.3, ModSecurity WAF with OWASP CRS v4, rate limiting, security headers, systemd sandboxing, and structured JSON logging for SIEM integration.
Zero Trust Networking on Linux with WireGuard, nftables, and Overlay Networks
Build a Zero Trust network on Linux using WireGuard for encrypted tunnels, nftables for micro-segmentation, and overlay networks like Tailscale and NetBird. Includes production configs, monitoring, and a phased deployment strategy.
Linux Kernel Hardening with sysctl: 40+ Security Parameters, Automation, and Compliance Mapping
Harden your Linux kernel with 40+ sysctl security parameters covering kernel self-protection, memory safety, network defense, and filesystem protection. Includes a production-ready config file, Ansible playbook, CIS/NIST compliance mapping, and drift detection setup.
Automated Linux Vulnerability Scanning: A Practical Guide to OpenVAS, Trivy, Vuls, and Nmap
Build a layered vulnerability scanning pipeline on Linux using OpenVAS/GVM, Trivy, Vuls, and Nmap. Covers setup, CI/CD integration, cron automation, and scanner supply chain security after the March 2026 Trivy compromise.
Linux DNS Security Hardening: DNSSEC, DNS over TLS, and Unbound in Practice
Harden DNS on Linux with Unbound, DNSSEC validation, DNS over TLS encryption, and RPZ firewalls. Covers the 2026 CA/B Forum DNSSEC mandate, production-ready configs, and step-by-step verification.