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Cyber Security

OSINT: How Much of Your Life Is Publicly Discoverable?

Open-source intelligence uses only public information, and it is usually enough to answer security questions about you.

CyberSafeTT · 5 November 2024 · 6 min read

OSINT is the practice of assembling public fragments into a profile. Investigators use it. So do social engineers building a convincing scam call.

What leaks without you noticing

  • Reused usernames that link a professional profile to an anonymous one.
  • Photo metadata and recognisable backgrounds that reveal home or school.
  • Birthday posts, pet names and school names, the classic security answers.
  • Public voter, company and property registries.
  • Old breach data tying an email address to a phone number.

Reducing your exposure

  • Use different usernames for different areas of life.
  • Strip location data before uploading photos; delay holiday posts.
  • Answer security questions with random strings stored in your password manager.
  • Lock down friend lists and tagged photos.
  • Re-run the search on yourself every few months.

Next step

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