Security Archives - Page 6 of 10

Centralized Access Control with Teleport: A Guide to SSH, Kubernetes, and Database Security

April 19, 2026

Ditch static SSH keys for good. This guide walks through setting up Teleport to centralize access to servers, Kubernetes, and databases with short-lived certificates and MFA.

Security

Hardening Linux with Firejail: A 6-Month Review of App Sandboxing

April 19, 2026

Standard Linux permissions are an all-or-nothing game. After 6 months of testing, I've found Firejail to be the most effective way to sandbox apps and protect sensitive data without the headache of SELinux.

Security

Stopping BadUSB: My 6-Month Experience Hardening Linux with USBGuard

April 18, 2026

Physical USB ports are a massive security blind spot. This guide shows you how to use USBGuard to whitelist trusted devices and block BadUSB attacks on Linux.

Security

GPG for Linux: A Practical Guide to Encrypting Files and Signing Data

April 17, 2026

Master GnuPG on Linux. This guide walks you through asymmetric encryption, signing files, and the pro-level key management habits that prevent data loss.

Security

Linux Server Security Auditing: Automating Hardening with Lynis

April 15, 2026

Discover how to use Lynis to automate Linux security audits. This guide covers installation, interpreting the Hardening Index, and practical steps to secure your kernel and file system permissions.

Security

Stop DNS Spoofing: A Hands-on Guide to DNSSEC Zone Signing and Validation

April 14, 2026

DNSSEC adds cryptographic integrity to your domain, stopping attackers from hijacking your traffic. Learn how to sign zones with BIND, manage keys, and build a secure chain of trust.

Security

Hunting Malware on Linux: A Hands-on Guide to YARA Rules

April 13, 2026

Master YARA rules to secure your Linux environment. This guide walks you through installation, writing effective detection rules, and automating memory scans to catch hidden threats.

Security

Scan Docker Images for CVEs with Trivy: A CI/CD Security Guide

April 12, 2026

Learn how to secure your Docker containers by integrating Trivy into your CI/CD pipeline. This guide covers manual scanning, automated CVE detection, and how to fail builds on critical vulnerabilities.

Security

Linux Sudoers Hardening: Don’t Let ‘Root for Everyone’ Kill Your Production Environment

April 10, 2026

Broad sudo permissions are a recipe for 2 AM outages. Learn how to implement the Principle of Least Privilege using command aliases, NOEXEC tags, and secure logging to protect your Linux servers.