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penetration testing

/ˌpɛnɪˈtreɪʃən ˈtɛstɪŋ/ · pen·e·tra·tion test·ing
noun
  1. A simulated cyber‑attack on a computer system, network, or application designed to evaluate its security posture and uncover vulnerabilities. The company hired an external firm to perform penetration testing before launching the new online service.
Did you know? The term “penetration testing” entered mainstream IT vocabulary in the mid‑1990s, and the shorthand “pen test” is now a common job title for security professionals.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Aug 18, 2026