How hackers get in (and how to stop them)

A practical, example-driven tour of security from basics to advanced. Start by thinking like an attacker and following a real breach through its five stages, then dig into the human layer of phishing and passwords, then the technical layer where web apps get hacked with real code for SQL injection and XSS, and finally the defender's playbook of least privilege, zero trust, detection, and response. Every attack is paired with its concrete defense.