Security – Page 7 – ITFROMZERO

Creating Strong Passwords and Checking Their Security: A Practical Guide with Free Tools

By admin March 19, 2026

Don't let weak passwords be your vulnerability! This article guides you on how to create super strong passwords, use the free ToolCraft tool to check their security, and protect your accounts.

Security

Nginx TLS 1.3 Configuration Guide and Cipher Suite Optimization: Achieve A+ on SSL Labs

By admin March 14, 2026

A comprehensive guide to configuring Nginx to enable TLS 1.3 and optimize cipher suites, helping your web server achieve an A+ rating on SSL Labs. Explore practical steps and foundational knowledge of TLS security.

Security

Optimizing Secure Management of Secrets, API Keys, and Credentials on Linux with HashiCorp Vault

By admin March 13, 2026

Managing secrets like API keys and credentials is a major challenge for many IT engineers. HashiCorp Vault offers a powerful solution to address this problem. This article guides you through installing, configuring, and using Vault on Linux, helping to maximize the protection of sensitive data.

Security

Hashing and Data Encoding: MD5, SHA-256, Base64, and Their Applications in IT Security

By admin March 11, 2026

In the IT world, data security is crucial. This article shares practical experiences with common vulnerabilities and how concepts like Hashing, MD5, SHA-256, and Base64 help protect critical information. A detailed guide from theory to practice.

Security

Linux Security Audit Logs: Experiences from an IT Engineer

By admin March 11, 2026

As an IT engineer, I know the importance of auditing Linux security logs. My server once suffered an SSH brute-force attack in the middle of the night—since then, I prioritize log auditing to detect threats early and protect the system.

Security

A Guide to Configuring AppArmor on Ubuntu: Restricting Process Permissions to Secure Your Server

By admin March 9, 2026

Many admins focus only on firewalls and SSH, forgetting the danger posed by the running applications themselves. This article shares real-world experience on how to use AppArmor on Ubuntu to 'jail' processes, limit their permissions, and prevent privilege escalation during an attack.

Security

Enhancing SSH Security: A Guide to Setting Up 2FA with Google Authenticator

By admin March 9, 2026

Don't let your server be compromised by a password alone. This guide will show you how to set up a second layer of 'armor' for SSH using your phone with Google Authenticator.

Security

Linux Server Security Audit with Lynis: From Installation to a Hardening Index of 80+

By admin March 8, 2026

Lynis runs directly inside your server and checks over 200 configuration points that remote scanners simply can't see. This guide walks through installation, interpreting results, and fixing real-world warnings — from SSH to kernel hardening — to push your hardening index from 55 up to 80+.

Security

Common Security Vulnerabilities in AI Code Assistants and How to Detect Them Automatically

By admin March 7, 2026

AI code assistants like Copilot and ChatGPT boost productivity, but they also introduce security vulnerabilities that code review tends to miss — SQL injection, command injection, hardcoded credentials, and more. This article breaks down the 5 most common issues with code examples, and walks you through setting up an automated scanning pipeline with Bandit, Semgrep, and TruffleHog.

Security

WireGuard VPN on Ubuntu Server: Complete Setup and Configuration from A to Z

By admin March 5, 2026

WireGuard runs directly in the Linux kernel, delivering significantly better performance than OpenVPN (real-world benchmarks: 100–200Mbps vs nearly 1Gbps) with far simpler configuration. This guide walks through each step in practice: installation, key pair generation, server and client configuration on Ubuntu Server — plus troubleshooting for common issues.