Security Archives - Page 5 of 18 - ITFROMZERO

Git Secret Scanning: How to Use TruffleHog to Find API Key Leaks in Commit History

By IT From Zero September 12, 2026

Detect and handle leaked API keys in Git history using TruffleHog. A detailed guide on deep scanning, secret verification, and setting up pre-commit hooks for source code security.

Security

Blocking Bad Bots & Scrapers with Nginx Map: The Optimal Solution for ‘Overloaded’ Servers

By IT From Zero September 11, 2026

A detailed guide on using the Nginx Map Module to block bad bots and scrapers. A practical solution to reduce CPU load and optimize server performance.

Ubuntu

Using debsums to Verify Ubuntu Integrity: Don’t Let Rootkits Nest on Your Server

By IT From Zero September 10, 2026

Don't let your server be compromised without your knowledge. Learn how to use debsums to check Ubuntu system file integrity and detect malware or data errors fast.

Centos

Mastering Firewalld IP Sets on CentOS Stream 9: Block Thousands of IPs Instantly

By IT From Zero September 9, 2026

Block thousands of attacking IPs with a single command. A detailed guide on using Firewalld IP Sets on CentOS Stream 9 to optimize security and performance.

Security

Subresource Integrity (SRI): The ‘Armor’ Against Malware When Using CDNs

By IT From Zero September 7, 2026

Learn how to implement Subresource Integrity (SRI) to protect your website from supply chain attacks when using third-party libraries from CDNs.

Virtualization

Configuring vTPM 2.0 with swtpm on Proxmox and KVM: The Key to Enabling BitLocker for Virtual Machines

By IT From Zero September 5, 2026

A detailed guide on configuring vTPM 2.0 using swtpm on Proxmox VE and KVM. This solution ensures Windows 11 VMs run smoothly and enables BitLocker disk encryption.

Security

Ansible Vault: Encrypting Secrets in Playbooks and Storing Them Safely in Git

By IT From Zero September 4, 2026

Hardcoding secrets in your Ansible Playbook and committing them to Git is the fastest way to lose a server. This article compares 4 approaches to managing secrets in Ansible — from env vars to HashiCorp Vault — and walks through implementing Ansible Vault step by step: the built-in, free solution that's secure enough for most teams.

Python

Practical Python Security: Don’t Expose Passwords by Misusing Hashlib

By IT From Zero September 4, 2026

Avoid exposing user passwords due to basic mistakes. Learn how to use hashlib (PBKDF2), secrets, and HMAC in Python for expert-level application security.

Development

Building Spring Boot 3 & PostgreSQL REST APIs: From ‘Working’ Code to Production-Ready Systems

By IT From Zero September 3, 2026

Level up your backend skills with this professional Spring Boot 3 REST API guide. Focus on JWT security, PostgreSQL, and real-world Docker deployment.