Requirements definition for survivable network systems

摘要: Pervasive societal dependency on large scale, unbounded network systems, the substantial risks of such dependency, and growing sophistication system intruders, have focused increased attention how to ensure survivability. Survivability is capacity a provide essential services even after successful intrusion compromise, recover full in timely manner. Requirements for survivable systems must include definitions non services, plus new survivability resistance, recognition, recovery. Survivable requirements also specify both legitimate intruder usage scenarios, practices development, operation, evolution. The paper defines framework definition discusses several emerging strategies. be designed into beginning with effective analysis definition.