A breezy look at the nitty‑gritty of resource and error management—databases, threading, file handles, and error‑handling philosophies. It’s the “don’t forget to tighten the bolts” chapter, reminding us that unmanaged resources and sloppy error handling are the secret doors that attackers love to sneak through.

A light‑hearted deep‑dive into architectural prerequisites—communication, class skeletons, data design, UI separation, and error/log handling. Think of it as laying a solid blueprint before the code construction crew arrives, because a wobbly foundation makes for a lot of late‑night debugging (and security headaches).

A breezy, slightly tongue‑in‑cheek look at why solid planning isn’t just good housekeeping—it’s a frontline defense. We walk through OWASP’s Insecure Design warning, compare personal versus mission‑critical projects, and tease out iterative vs. sequential approaches, all with a sprinkle of humor to keep the security talk from feeling like a lecture.