Topic

Handling and containing intrusions

Applicable to

all

History

Priority

should

Dec 2021

Legal advice is sought before allowing intrusion activity to continue on a system for the purpose of collecting further data or evidence.

Miscellaneous changes were made to rationale and security controls throughout the publication. This included:

• A review from the Using the Information Security Manual chapter through to the Guidelines for Media chapter.

• Security controls suitable for all audiences have been identified with the ‘All’ applicability marking while additional security controls suitable for just government audiences have been identified with the O, P, S and TS applicability markings.

• Security controls suitable for specific classifications have been amended to include their classification(s) in the wording of the security controls to reduce the reliance on applicability markings to confer suitability.

• Tables in security controls have been converted into prose to allow for inclusion in the SSP annex template and the XML list of security controls.

• The use of ‘official’ and ‘highly classified’ terminology has been replaced with specific classifications to remove ambiguity.

• Security controls relating to high assurance ICT equipment have had their applicability narrowed to ‘S, TS’ reflecting that they are intended for the protection of SECRET and TOP SECRET systems and data.

2015

Agencies considering allowing intrusion activity to continue under controlled conditions for thepurpose of seeking further information or evidence must seek legal advice.

2010

Agencies considering allowing an attacker to continue some actions under controlled conditions for thepurpose of seeking further information or evidence should seek legal advice.

2008

Agencies considering allowing an attacker to continue some actions under controlled conditions for the purpose of seeking further information or evidence should seek legal advice.