profiler

/ˈproʊfaɪlər/
noun
  1. A person who creates a detailed description of someone's character, behavior, or personality, especially to help solve crimes.
    • The FBI profiler studied the crime scene to understand the suspect's mindset.
    • A criminal profiler often works with detectives to narrow down the list of possible offenders.
    • The TV show follows a profiler who helps police catch serial criminals.
  2. A tool or software that collects and analyzes data about a system, user, or process, such as computer performance or online behavior.
    • The developer used a code profiler to find which parts of the program were running slowly.
    • A network profiler can show you how much bandwidth each device is using.
    • The website's user profiler tracks visitors' preferences to show them relevant ads.
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