Your Priors Are Out To Get You*: Security and Statistics (* P=0.06)

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Presented at Chcon 2025 by

Statistical analysis can be a key tool for upping your security game, but there’s a lot of ways to end up with statistics-shaped outputs rather than useful information to support your work. In this talk a security expert (Kate Pearce) and a scientist (Lucy Stewart) team up to explain, with real-life examples, when and how statistics can help you figure out if that shiver down your spine is something to be concerned about – and when your priors are, actually, out to get you.