Severity Isn’t an Input – it’s an Outcome
Severity is not a category. It’s a consequence.
When systems are placed under plausible stress, structural limits reveal themselves. Pre-defining severity narrows what testing is allowed to teach us.
Plausibility is the constraint.
Severity is the signal.
When Availability Isn’t the Risk
In certain market-adjacent activities – including execution, custody, clearing, collateral management and settlement – systems can remain technically available while conditions become progressively less stable. Trades continue to execute. Platforms respond. Processes function. From a narrow continuity perspective, the service appears intact.
Yet behaviour begins to shift.
Service Fragility and the Limits of Confidence in Operational Resilience
Resilience failures rarely stem from missing controls. They emerge from hidden fragility within interacting dependencies. This paper explores the structural gap between confidence and capability — and why surprise persists even in well-prepared organisations.