Security – Page 5 – ITFROMZERO

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.

Security

SPF, DKIM, and DMARC: The ‘Atomic Trio’ for 100% Email Inbox Delivery

By admin May 14, 2026

Don't let your emails disappear into the Spam folder. Here is a detailed guide on configuring SPF, DKIM, and DMARC to secure your domain and enhance sender reputation for IT pros.

Security

Teleport: How I Managed 50+ Servers and K8s Without Using a Single SSH Key

By admin May 14, 2026

Managing SSH keys for dozens of servers is a significant security challenge. This article shares practical experience in deploying Teleport—an SSH alternative using short-lived certificates to centralize Server and Kubernetes management with detailed audit logs.

Docker

Docker Socket Security: Don’t Let ‘/var/run/docker.sock’ Become a Backdoor for Hackers

By admin May 13, 2026

Don't let /var/run/docker.sock be a fatal vulnerability on your VPS. Discover how to use Tecnativa Proxy for Docker API permissions—high security for only 15MB RAM.

Ubuntu

BorgBackup on Ubuntu: ‘Super-Compressed’ Backup Solution and Secure Encryption for Sysadmins

By admin May 12, 2026

Guide to installing BorgBackup on Ubuntu. A smart backup solution that saves 90% storage space through Deduplication and provides absolute security with AES-256 encryption.