How every number here is produced

Each product or habit carries a weight derived from what published research shows it collects and what can be inferred from it. The composite is 100 × (1 − e^(−Σw / 55)) — deliberately diminishing, because the tenth connected device tells an attacker far less than the first.

Bands: 0–24 Low, 25–49 Moderate, 50–74 High, 75–100 Severe. Percentiles come from applying the same weights across the full catalogue of profile combinations — never from comparing you against other visitors.

Limits. This is a structural model, not surveillance of you. It cannot know whether you have already hardened a setting, and it cannot see anything private. A Low score means little is inferable from what you told us — not that you are safe.

Argus maintains our breach corpus; Pulse is our feed of breach and vulnerability activity. We report counts, data classes and meaning. We never republish raw breach content — doing so would extend the harm rather than reduce it.

Where a result is drawn from our own data we say so explicitly rather than dressing it as third-party research.