Purpose of Control 5.28
Collating accurate evidence in a timely manner is a crucial aspect of incident management that informs everything from disciplinary action to legal proceedings and regulatory investigations.
Control 5.28 allows organisations to fulfil their internal and external obligations, by managing evidence throughout the reporting and resolution of information security incidents in a robust and consistent way.
Attributes Table
5.28 is a corrective control that maintains risk by creating procedures which identify, collect, store and preserve evidential material, relating to information security events.
| Control Type | Information Security Properties | Cybersecurity Concepts | Operational Capabilities | Security Domains |
|---|---|---|---|---|
| #Corrective | #Confidentiality | #Detect | #Information Security Event Management | #Defence |
| #Integrity | #Respond | |||
| #Availability |
Ownership of Control 5.28
Control 5.28 deals with the explicit legal and disciplinary consequences of collecting evidence relating to an information security incident.
Whilst ISO 27002 largely deals with internal technical matters pertaining to information security, there are circumstances where procedural adherence is a legal matter, such is the case in Control 5.28.
Organisations should consider delegating ownership of Control 5.28 to an appropriate member of senior management with overall responsibility for HR and/or legal matters.
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General Guidance on Control 5.28
Control 5.28 explicitly states that evidence collection procedures should be formulated with the express purpose of fulfilling the organisation’s disciplinary and/or legal obligations.
Furthermore, evidence collection should be preoccupied with fulfilling obligations across different regulatory environments and legal jurisdictions, to ensure that incidents are able to be analysed by multiple distinct external bodies to the same degree, across several variables, including:
- Storage media
- Assets and devices
- Device status (login attempts, power status etc.)
Organisations need to be able to demonstrate that:
- Their incident records are complete, and haven’t been interfered or tampered with.
- Electronic evidence is a perfect replica of physical evidence, where applicable.
- Internal systems and ICT platforms involved in collecting evidence had the operational capacity to do so, when the evidence was recorded.
- The individuals involved in collecting evidence are suitably qualified and certified to carry out their respective roles.
- They have the legal entitlement to collect digital evidence, where required.
Supplementary Guidance
Control 5.28 warns organisations about making any assumption as to the relevancy of any evidence collected towards future legal proceedings.
Organisations are encouraged to address any doubts by seeking legal advice and/or involving law enforcement authorities at the earliest opportunity, in order to avoid accidental or wilful destruction of incident-related evidence.
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Changes and Differences From ISO 27002:2013
27002:2022-5.28 replaces 27002:2013-16.1.7 (Collection of evidence).
27002:2022-5.28 adheres to the same operational principles as 27002:2013-16.1.7, with four notable additions:
- the need to ensure that evidence is free from tampering
- ICT systems were operating correctly during the collection process
- the organisation has the legal right to collect certain pieces of digital evidence
- any electronic evidence collected is identical (to the extent that this possible) to the physical original
New ISO 27002 Controls
New Controls
| ISO/IEC 27002:2022 Control Identifier | ISO/IEC 27002:2013 Control Identifier | Control Name |
|---|---|---|
| 5.7 | New | Threat intelligence |
| 5.23 | New | Information security for use of cloud services |
| 5.30 | New | ICT readiness for business continuity |
| 7.4 | New | Physical security monitoring |
| 8.9 | New | Configuration management |
| 8.10 | New | Information deletion |
| 8.11 | New | Data masking |
| 8.12 | New | Data leakage prevention |
| 8.16 | New | Monitoring activities |
| 8.23 | New | Web filtering |
| 8.28 | New | Secure coding |
Organisational Controls
People Controls
| ISO/IEC 27002:2022 Control Identifier | ISO/IEC 27002:2013 Control Identifier | Control Name |
|---|---|---|
| 6.1 | 07.1.1 | Screening |
| 6.2 | 07.1.2 | Terms and conditions of employment |
| 6.3 | 07.2.2 | Information security awareness, education and training |
| 6.4 | 07.2.3 | Disciplinary process |
| 6.5 | 07.3.1 | Responsibilities after termination or change of employment |
| 6.6 | 13.2.4 | Confidentiality or non-disclosure agreements |
| 6.7 | 06.2.2 | Remote working |
| 6.8 | 16.1.2, 16.1.3 | Information security event reporting |
Physical Controls
| ISO/IEC 27002:2022 Control Identifier | ISO/IEC 27002:2013 Control Identifier | Control Name |
|---|---|---|
| 7.1 | 11.1.1 | Physical security perimeters |
| 7.2 | 11.1.2, 11.1.6 | Physical entry |
| 7.3 | 11.1.3 | Securing offices, rooms and facilities |
| 7.4 | New | Physical security monitoring |
| 7.5 | 11.1.4 | Protecting against physical and environmental threats |
| 7.6 | 11.1.5 | Working in secure areas |
| 7.7 | 11.2.9 | Clear desk and clear screen |
| 7.8 | 11.2.1 | Equipment siting and protection |
| 7.9 | 11.2.6 | Security of assets off-premises |
| 7.10 | 08.3.1, 08.3.2, 08.3.3, 11.2.5 | Storage media |
| 7.11 | 11.2.2 | Supporting utilities |
| 7.12 | 11.2.3 | Cabling security |
| 7.13 | 11.2.4 | Equipment maintenance |
| 7.14 | 11.2.7 | Secure disposal or re-use of equipment |
Technological Controls
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