Applicable

(Y)es / (N)o

(C)onfidentiality

(I)ntegrity

(A)vailability

RPN

(C+I+A)

(S)atisfactory

L1

M2

H3

L1

M2

H3

L1

M2

H3

(O)ther than satisfactory +##

sc-3(4)

security function isolation  | module coupling and cohesiveness

assessment objective:

Determine if the organization implements security functions as largely independent modules that:

sc-3(4)[1]

maximize internal cohesiveness within modules; and

sc-3(4)[2]

minimize coupling between modules.

potential assessment methods and objects:

Examine: [select from: System and communications protection policy; procedures addressing security function isolation; information system design documentation; information system configuration settings and associated documentation; information system audit records; other relevant documents or records].

Interview: [select from: System/network administrators; organizational personnel with information security responsibilities].

Test: [select from: Organizational processes for maximizing internal cohesiveness within modules and minimizing coupling between modules; automated mechanisms supporting and/or implementing security functions as independent modules].