Security Level – the qualification of the degree of risk that a security incident will be attempted or will occur.
- Security level 1 – the level for which minimum appropriate protective security measures shall be maintained at all times.
- Security level 2 – the level for which appropriate additional protective security measures shall be maintained for a period of time as a result of heightened risk of a security incident.
- Security level 3 – the level for which further specific protective security measures shall be maintained for a limited period of time when a security incident is probable or imminent, although it may not be possible to identify the specific target.