MT**

• MTBF: Mean time between failures
• MTTD: Mean time to detection
• MTTR: Mean time to repair/remediate/resolve/respond
• MTTA: Mean time to acknowledge
• MTTF: Mean time to failure

Context

Cyber Security

MTTD: Mean time to detect

Mean time to detect is an extremely common, yet important key performance indicator (KPI) in the IT incident management space. MTTD can be defined simply as the amount of time passed between the beginning of an IT incident and the discovery of the incident by your security team.

While the metric is quite easy to calculate on a case by case basis, there’s a simple equation to use when looking at your > MTTD on a macro level:

MTTD = (Total Sum of Detection Time) / (Total Number of Incidents)

MTTR: Mean time to remediate

Mean time to remediate is another common and important key performance indicator (KPI) in the IT incident management space. MTTR, in similar fashion to MTTD, can be defined as the average amount of time passed from the discovery of an IT incident to the time your security team remediates said incident. In more simple terms, MTTR is the number of days it takes to close a security vulnerability once it has been discovered.