The capstone scenario is NimbusDesk, a fictional small SaaS company running a customer support ticketing platform with roughly 40 employees, a public web application, an internal admin panel, and a database holding customer PII. Across the next four lessons you will design its network segmentation, implement transport and access hardening on representative lab hosts, produce a full threat model and risk register, and assemble everything into a single portfolio submission — deliberately mirroring the real sequence a junior security engineer follows when securing a new environment from scratch.
Analogy🏏Cricket
💪 Think of it like fitness: injuries follow a predictable chain — poor warm-up, then form breakdown, then compensation, then the actual tear — and a good physio catalogs where each patient's chain can be interrupted early, rather than only treating the tear afterward. MITRE ATT&CK is the sports-medicine literature of intrusions: a public catalog of every observed breakdown pattern, organized by the stage it serves — how attackers get in, how they escalate, how they extract. Coaches worldwide describe an athlete's risk in that shared vocabulary. This reveals ATT&CK's real value: intrusions become a sequence you can interrupt at stage two, not a disaster you discover at stage five.