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Mean time to contain Calculator

Measure the time from detecting a security incident to containing it.

Cybersecurity & cyber assurance

How it's worked out

  • MTTC = Σ (containment − detection) ÷ incidents
  • Containment = attacker can no longer spread or act
NoteThe mean is pulled by a few long incidents; report the median and the 90th percentile alongside it.

Source: NIST SP 800-61 (incident handling); IBM Cost of a Data Breach (containment lifecycle)

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