AC-21 Information Sharing

Access Control

Moderate High

Description

a. Enable authorized users to determine whether access authorizations assigned to a sharing partner match the information's access and use restrictions for [Assignment: organization-defined information sharing circumstances where user discretion is required]; and b. Employ [Assignment: organization-defined automated mechanisms or manual processes] to assist users in making information sharing and collaboration decisions.

Supplemental Guidance

Information sharing applies to information that may be restricted in some manner based on some formal or administrative determination. Examples of such information include contract-sensitive information, classified information related to special access programs or compartments, privileged information, proprietary information, and personally identifiable information. Security and privacy risk assessments as well as applicable laws, regulations, and policies can provide useful guidance for discretionary information-sharing decisions.

Changes from Rev 4

No significant changes from Rev 4.

Compliance Mappings

ISO 27002:2022

5.15

COBIT 2019

DSS05

NIS2 Directive

Art. 21(2)(i)

MAS TRM

9

BSI IT-Grundschutz

ORP.4

BIO2

5.15

RBI CSF

Annex1.15

DNB Good Practice

DNB.18.5

UAE IA

T9

Qatar NIA

AC

BoG CISD

CISD-VIII

BCBS 239

Principle 11

FFIEC IS

II.C.13

NYDFS 500

500.18

CMMC 2.0

AC

ISAE 3402

Clause 8

NAIC Insurance Data Security

8