Security Archives - Page 3 of 12 - ITFROMZERO

Securing Kubernetes Network Policy: Stopping ‘Lateral Movement’ in the Cluster

By IT From Zero August 25, 2026

Don't leave your K8s cluster exposed to hackers. Learn how to configure Network Policies to isolate Pods, block lateral movement attacks, and effectively implement Zero Trust.

Security

Time to Ditch GPG: A Guide to Using age for Ultra-Compact File Encryption on Linux

By IT From Zero August 24, 2026

Is GPG too complex for daily encryption? Try age – a modern, compact, and secure tool using X25519, purpose-built for SysAdmins.

Security

Kubernetes Security: Stopping Root Containers with PSS and Admission Controllers

By IT From Zero August 24, 2026

Don't let your Kubernetes cluster be compromised by misconfigurations. A detailed guide on using PSS and Kyverno to block root containers based on real-world experience.

Security

Stop Unauthorized IP Access: Configuring Authenticated Origin Pulls (Cloudflare & Nginx)

By IT From Zero August 23, 2026

Secure your Nginx server comprehensively by only allowing traffic from Cloudflare via the Authenticated Origin Pulls (mTLS) mechanism.

Security

Tlog Guide: The “Security Camera” for Recording Every Linux Terminal Session

By IT From Zero August 20, 2026

Forget .bash_history; tlog is the real security auditing tool for Linux. Record entire Terminal sessions and replay them like video for absolute system control.

Security

Guide to Installing DefectDojo on Docker: Centralized Vulnerability Management for DevSecOps

By IT From Zero August 13, 2026

Vulnerability management is no longer a headache with DefectDojo on Docker. Detailed guide on installation, importing scan results, and API automation for DevSecOps.

Security

Mastering Cilium Tetragon: Monitoring and Blocking Runtime Attacks with eBPF

By IT From Zero August 9, 2026

A detailed guide on using Cilium Tetragon for monitoring and securing Linux Runtime based on eBPF technology. This article shares quick installation steps, how to write TracingPolicy, and real-world experience to protect servers from attacks.

Security

Preventing RCE and Injection with OpenRASP: Protecting Web Apps from Within Without Code Changes

By IT From Zero August 9, 2026

Protect web applications from 0-day, RCE, and SQL Injection with OpenRASP. Detailed guide on installing the Java Agent without modifying source code.

Security

Setting Up a Tor Onion Service with Nginx: ‘Stealth’ Your Website on Linux

By IT From Zero August 9, 2026

A guide on setting up a Tor Onion Service with Nginx on Linux. Learn how to prevent IP leaks, secure headers, and apply OPSEC principles for a fully anonymous .onion website.