ISM-0499 policy ASD Information Security Manual (ISM)

Ensure Compliance with ASD Communication Security Policies

Follow ASD's security rules for operating and managing communication systems safely.

Preventative S TS ASD Information Security ManualGuidelines for cryptography compliance obligations policy compliance

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Plain language

This control is about following specific security guidelines set by the Australian Signals Directorate (ASD) when managing communication systems. It's important because if these rules aren't followed, sensitive information could be intercepted or tampered with, leading to serious privacy breaches and potential financial losses.

01 - Overview

Framework

ASD Information Security Manual (ISM)

Control effect

Preventative

Classifications

S, TS

ISM last updated

May 2025

Control Stack last updated

19 Mar 2026

E8 maturity levels

N/A

Guideline

Guidelines for cryptography

Section

Cryptographic fundamentals

Topic

Communications Security Doctrine

Official control statement

Communications security doctrine and policy produced by ASD for the management and operation of HACE is complied with.

policy ASD Information Security Manual (ISM) ISM-0499

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Why it matters

Without complying with ASD HACE communications security policy, interception or compromise of sensitive communications may occur, leading to privacy breaches and legal consequences.

settings

Operational notes

Review ASD HACE communications security policies regularly, and update procedures and configurations promptly when ASD doctrine or policy changes.

02 - Implement

build

Implementation tips

The IT manager should ensure all staff managing communications systems are familiar with the ASD's security policies. This can be done by organising regular training sessions where the staff learn about these policies and their importance.
System administrators should regularly review and update communication systems to ensure they comply with ASD guidelines. They can do this by conducting monthly checks and logging any changes made to keep systems secure.
The compliance officer should create a checklist based on ASD policies to help the team consistently apply the required rules. This checklist should be used during system audits and updates to ensure nothing is overlooked.
Managers should encourage their teams to report any issues or uncertainties regarding the security of communication systems promptly. They can set up a straightforward reporting process, such as an email hotline where staff can ask questions.
Human Resources should include cybersecurity responsibilities in job descriptions for roles involving communication systems management. This ensures that new hires understand their role in maintaining security from day one.

03 - Audit

fact_check

Audit / evidence tips

AskThe latest ASD communication security policy documents: Request to see the policies referenced for guidance GoodPolicies that are marked as current and have been reviewed within the last year
AskA log of system updates and reviews tied to these policies: Request the change logs from the system administrators GoodA detailed log updated consistently each month
AskTraining records on ASD policy compliance: Request records of attendance at any policy training sessions GoodRecent training delivered to all relevant staff with attendance documented and up-to-date
AskThe compliance checklist completed during the latest system audit: Request the completed checklist that the compliance officer uses GoodA properly filled checklist with no items left unchecked
AskCommunication system incident reports from the last year: Request reports of any security incidents related to communications GoodFew incidents and indications that issues were resolved promptly following ASD guidance

04 - Mappings

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Cross-framework mappings

How ISM-0499 relates to controls across ISO/IEC 27001, ISO/IEC 42001, Essential Eight, and ASD ISM.

ISO 27001

Control	Notes	Details
handshake Supports (4) expand_less
Annex A 5.1	ISM-0499 requires compliance with ASD communications security doctrine and policy for the management and operation of HACE
Annex A 5.4	ISM-0499 requires personnel managing and operating HACE to comply with ASD communications security doctrine and policy
Annex A 5.31	ISM-0499 requires compliance with ASD communications security doctrine and policy produced for HACE management and operation
Annex A 5.37	ISM-0499 requires compliance with ASD communications security doctrine and policy for HACE operations
link Related (1) expand_less
Annex A 5.36	Annex A 5.36 requires organisations to regularly review whether information security policies and standards are being complied with

These mappings show relationships between controls across frameworks. They do not imply full equivalence or certification.