Resistance: Built-in mechanisms to resist attacks (such as the use of firewalls) means that many attacks on the system that may threaten its survivability are unsuccessful.
Recognition: This is the process of recognising that an attack is underway. Early recognition means that counter-measures can be quickly deployed and that extra protection can be applied to critical assets, thus increasing the overall chances of survival.
Recovery: If the system has built-in features to support recovery, then normal system service can be resumed more quickly after a successful attack. The overall availability of the system is therefore increased.