Every threat in the catalog is scored the same way — a simple 1–9 ranking adapted from a process risk management system. It’s not about being precise; it’s about being consistent, so threats can be honestly compared against each other.
Impact and Likelihood are properties of the threat itself — they’re what we publish on each threat page. Vulnerability is personal: it depends on how prepared you are.
How hard this hits an unprepared household — how badly it disrupts life, and how long that disruption lasts. A brief catastrophe and a long, grinding crisis can land on the same number, because duration is part of the damage.
How hard this would hit YOU, given how prepared you are today.
How often a scenario like this actually reaches a household like yours.
The three ratings are multiplied, so any one factor can hold the others in check — a catastrophe you’re not exposed to drops, and a near-certain nuisance only climbs so far. Sorting by Threat Rating tells you what to work on first.
You only get to move one number. Impact and Likelihood are largely fixed by the threat and your geography. Vulnerability is the lever — every skill learned and supply stored lowers it, which lowers your rating. The gap between today’s rating and your goal is your Opportunity: how much safer this threat can get.
This isn’t about exact scores. It’s about rating every threat the same way so the comparison is fair — pick a number, keep it consistent, and adjust as you learn.
