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-8(4)

transmission confidentiality and integrity  | conceal / randomize communications

assessment objective:

Determine if:

sc-8(4)[1]

the organization defines alternative physical safeguards to be implemented to protect against unauthorized disclosure of communication patterns;

sc-8(4)[2]

the information system, unless otherwise protected by organization-defined alternative physical safeguards, implements cryptographic mechanisms to:

sc-8(4)[2][a]

conceal communication patterns; or

sc-8(4)[2][b]

randomize communication patterns.

potential assessment methods and objects:

Examine: [select from: System and communications protection policy; procedures addressing transmission confidentiality and integrity; 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; system developer].

Test: [select from: Cryptographic mechanisms supporting and/or implementing concealment or randomization of communications patterns; automated mechanisms supporting and/or implementing alternative physical safeguards; organizational processes for defining and implementing alternative physical safeguards].