Banner Grabbing

Noun · Security & Infosec

Definitions

  1. A reconnaissance technique that collects identifying information from network services by reading banners, headers, or protocol responses. Attackers and defenders use banner grabbing to infer software versions, configurations, and exposed technologies.

    In plain English: Collecting identifying service information by reading what servers reveal when contacted.

    Example: "The scanner used banner grabbing to identify outdated SSH and web server versions on exposed hosts."

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