https://shipreadyai.dev/glossary/fingerprint

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# Fingerprint

What your app quietly tells the internet about how it was built.

A fingerprint is the collection of small signals that identify your stack from outside: a header naming the host, a build artefact naming the framework, a cookie name, a familiar path, a meta tag left by a builder.

On its own it is not a problem. Every app on the internet has one. It matters because it tells someone which known issues are worth trying against you, and it turns a general scan into a targeted one. When CVE entries for AI-generated code climb month over month, being identifiable as a particular builder is a filter someone can search on.

A check records what it can see so the fingerprint is a fact rather than a guess. Reducing it is mostly removing what you do not need to publish.