id: "PL-08(01)" title: "Defense in Depth" family: "PL" family_name: "Planning" sort_id: "pl-08.01" priority: "P1" implementation_level: "organization" parent: "PL-08" enhancement: True
Statement
Design the security and privacy architectures for the system using a defense-in-depth approach that:
Allocates {{ insert: param, pl-08.01_odp.01 }} to {{ insert: param, pl-08.01_odp.02 }} ; and
Ensures that the allocated controls operate in a coordinated and mutually reinforcing manner.
Guidance
Organizations strategically allocate security and privacy controls in the security and privacy architectures so that adversaries must overcome multiple controls to achieve their objective. Requiring adversaries to defeat multiple controls makes it more difficult to attack information resources by increasing the work factor of the adversary; it also increases the likelihood of detection. The coordination of allocated controls is essential to ensure that an attack that involves one control does not create adverse, unintended consequences by interfering with other controls. Unintended consequences can include system lockout and cascading alarms. The placement of controls in systems and organizations is an important activity that requires thoughtful analysis. The value of organizational assets is an important consideration in providing additional layering. Defense-in-depth architectural approaches include modularity and layering (see SA-8(3) ), separation of system and user functionality (see SC-2 ), and security function isolation (see SC-3).
Assessment Objective: the security architecture for the system is designed using a defense-in-depth approach that allocates {{ insert: param, pl-08.01_odp.01 }} to {{ insert: param, pl-08.01_odp.02 }};
Assessment Objective: the privacy architecture for the system is designed using a defense-in-depth approach that allocates {{ insert: param, pl-08.01_odp.01 }} to {{ insert: param, pl-08.01_odp.02 }};
Assessment Objective: the security architecture for the system is designed using a defense-in-depth approach that ensures the allocated controls operate in a coordinated and mutually reinforcing manner;
Assessment Objective: the privacy architecture for the system is designed using a defense-in-depth approach that ensures the allocated controls operate in a coordinated and mutually reinforcing manner.
Security and privacy planning policy
procedures addressing information security and privacy architecture development
enterprise architecture documentation
information security and privacy architecture documentation
system security plan
privacy plan
security and privacy CONOPS for the system
other relevant documents or records
Organizational personnel with security and privacy planning and plan implementation responsibilities
organizational personnel with information security and privacy architecture development responsibilities
organizational personnel with information security and privacy responsibilities
Organizational processes for designing the information security and privacy architecture
mechanisms supporting and/or implementing the design of the information security and privacy architecture