Foundations

The houses, the valuables, and why locks exist.

• Assets and the CIA TriadWhat you own, and the three promises security makes about it.Free
• Attack Surface and RiskCounting your doors before the burglar does.

Who is at the gates, and how a break-in actually unfolds.

• Threat Actors and MotivationsBurglars, spies, vandals — and the neighbor with a key.
• Anatomy of an AttackA break-in is not a moment. It is a sequence.

Layered walls, minimal keys, and assuming the burglar is already inside.

• Defense-in-Depth, Least Privilege, Assume BreachThree rules that do most of the work.
• Prevention, Detection, ResponseLocks, alarms, and the fire brigade.

The city watch, and your map for everything that comes next.

• How a SOC WorksMillions of signals in, a handful of decisions out.
• Your Map of the TerritorySeven domains, one defensible city — and where you go from here.