Security – ITFROMZERO – Share tobe shared!

Mastering Velociraptor: The ‘Eye’ for Incident Response (DFIR) Across Hundreds of Linux Servers

By admin May 30, 2026

Don't let security incidents cause panic. This Velociraptor installation guide helps you investigate and collect digital evidence (DFIR) across numerous Linux servers instantly using VQL.

Centos

Installing Fail2ban on CentOS Stream 9: Battle-Tested Brute-Force Protection

By admin May 29, 2026

Install Fail2ban on CentOS Stream 9 to effectively block SSH Brute-force attacks. Detailed guide on jail.local configuration, SELinux fixes, and Firewalld rich-rules integration.

Python

Nuitka: Secure ‘Armor’ and Maximum Performance for Python Applications via C++

By admin May 28, 2026

Discover how Nuitka compiles Python to C++ to provide absolute source code protection and optimize application performance. The perfect alternative to PyInstaller.

Docker

Optimize Docker Images 30x with DockerSlim (Without Touching the Dockerfile)

By admin May 28, 2026

The era of bloated Docker images is over. This guide shows you how to use DockerSlim to automatically shrink container sizes by 30x, speeding up deployment and tightening security.

Git

Securing Secrets in Git with git-crypt: Encrypt Sensitive Files Without a Vault

By admin May 26, 2026

Exposing secrets on Git is a nightmare for any developer. This guide shows you how to use git-crypt to automatically encrypt .env files and API keys, ensuring team security without complex setups.

Security

Deploying Keycloak with Docker: An All-in-One SSO Solution for Enterprises

By admin May 25, 2026

Learn how to deploy Keycloak with Docker for centralized identity management. An optimal solution supporting SSO and OAuth2 security for enterprises without license fees.

Linux

Mastering User Namespaces on Linux: Preventing Privilege Escalation Risks

By admin May 23, 2026

User Namespaces are the key to running secure rootless containers on Linux. Learn how UID/GID mapping completely isolates processes from system root privileges.

Security

SBOM: The “X-Ray” for Dependency Analysis and Vulnerability Scanning with Syft & Grype

By admin May 19, 2026

Learn how to use Syft and Grype for dependency analysis and automated vulnerability scanning. Secure your software supply chain with SBOM – a modern security standard for SREs and DevSecOps.

Security

Hunting Security Vulnerabilities with Semgrep: Fast, Accurate, and Extremely Easy Rule Writing

By admin May 18, 2026

Learn how to use Semgrep for automated source code analysis, quickly detect security vulnerabilities, and effectively integrate into CI/CD workflows for developers.

Security

Self-hosting Passbolt with Docker: Ending Password Sharing via Zalo for Tech Teams

By admin May 17, 2026

Stop the habit of sending passwords via Zalo. Learn how to install self-hosted Passbolt with Docker for professional team credential management with GPG encryption and transparent Audit Logs.