Linux Containers: Namespaces, cgroups, and the Security Boundary
1. Introduction Linux containers rely on kernel isolation primitives rather than a separate guest kernel. Namespaces isolate resources such as
SELinux and AppArmor: Mandatory Access Control for Linux Defense in Depth
1. Introduction Traditional Unix permissions answer whether a user or group may access a file. Mandatory Access Control adds another
Linux Package Security: Repositories, Signatures, Updates, and Supply-Chain Risk
1. Introduction Linux package managers make system maintenance efficient by resolving dependencies, validating metadata, and installing software from repositories. The
Linux Incident Response Triage: Processes, Network, Users, Logs, and Persistence
1. Introduction When a Linux host is suspected of compromise, the first minutes matter. Responders need a repeatable triage process
Linux File Permissions: chmod, chown, umask, and the Security Model
1. Introduction Linux permissions are one of the first security controls applied to almost every file, directory, device, socket, and
Safe Browsing Basics windows
How to Safely Browse the Web on Windows: Browser Security Basics The web browser is the single most-used application on
User Account Control (UAC)
Understanding User Account Control (UAC) and Why It Matters That gray screen asking “Do you want to allow this app
backup restore windows
How to Use Windows Backup to Protect Your Data Ransomware, hardware failure, accidental deletion, theft — the causes vary, but
Windows Privacy Settings
How to Check if Your Windows PC Has Been Compromised Not every infection announces itself with a ransom note or
Signs Your PC Is Compromised
How to Check if Your Windows PC Has Been Compromised Not every infection announces itself with a ransom note or