Layered Defense: Security Standard Maturity Simulator (2D)

This 2D companion renders the same layered-defense model as the 3D simulator — concentric Protect, Detect and Respond shells around a crown-jewel core, drawn here as flat, pannable, zoomable rings instead of a rotating sphere — and drives the identical stochastic particle process: attack attempts spawn outside the outer ring and travel inward, each layer independently rolling its own coverage odds (or all being bypassed together when a correlated blind spot is toggled on). Four maturity-tier presets jump all three sliders to the bands NIST CSF assigns Partial / Risk Informed / Repeatable / Adaptive organizations. Alongside the closed-form breach probability and annualized loss expectancy (ALE), this version adds a live empirical readout: every simulated attack and every breach is tallied from the same particle logic driving the canvas, so you can watch the simulation's own empirical breach rate converge onto the closed-form formula in real time — a direct numerical check that the model on screen matches the math in the theory box.