Mean Time to Response (MTR)

Mean Time to Response (MTR) is, in IT security, the average time an organization needs to respond to a detected security incident and initiate appropriate countermeasures. The metric starts after the detection of an attack and ends when the incident has been contained, remediated or fully closed.

A short MTR is crucial for minimizing the impact of an attack. The faster security teams respond, the lower the potential damage such as data loss, system outages or financial consequences. MTR is significantly influenced by clearly defined incident response processes, automation and the integration of security solutions. Typical response measures include isolating affected systems, resetting compromised accounts or applying patches. Communication and documentation are also part of the process. Organizations use MTR as a KPI to assess their responsiveness and identify optimization potential in processes and tools.

Together with the Mean Time to Detect, MTR forms a central basis for assessing operational cyber resilience. Where internal resources are lacking, Managed Services can complement these capabilities operationally. Operationally, automated attack detection helps to separate relevant signals from less critical events more quickly.

See also: Incident Response and Managed Detection and Response.