kpi

lesson

analytics posthog bot-detection kpi observability

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Viewport larger than screen is a synthetic-traffic fingerprint, and zero bot days prove nothing

Doing daily product-analytics KPI reads on a low-volume site (PostHog, but the shape is provider-agnostic), the standard bot filter is a screen-resolution denylist such as NOT (screen 800x600) . Two failure modes bit us on 2026-08-15. 1. A run of zero bot days is not evidence the filter is…

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