ISO 27001 Annex : A.9 Access Control

A.9.1 Business Requirements of Access Control

ISO 27001 Annex : A.9 Access Control Its Objective is limiting the access to information and information processing facilities.

A.9.1.1 Access Control Policy

Control- An access control policy with supporting business and information security requirements should be established, documented, and reviewed.

Implementation Guidance- Asset owners should lay down appropriate rules for access control, access rights, and limits on particular user roles to their assets, with the level of info and the strictness of controls representing the related information security risks. Access controls are both logical as well as practical, so they should be taken together. Users and service providers should be provided with a clear, transparent statement of the business requirements that access controls should meet.

The inbox is always open in my brain, and anyone can get in any time and access me. Turning it off is taking back control. I decide who gets in. It’s about privacy, having a self.
-Jill Soloway

The policy should take note of:
  1. Security requirements applied to business applications;
  2. Information dissemination and authorization procedures, e.g. the need-to-know concept and extent of information access and information classification;
  3. Consistency between access rights and policies on the classification of information systems and networks;
  4. related legislation and other contractual obligations pertaining to information or information access controls;
  5. Access rights management in distributed and networked environments which recognizes the kinds of available connections;
  6. Segregation of access management functions, e.g. access request, access authorization, access administration;
  7. formal authorization requirements for access applications;
  8. Requirements for periodic review of the rights to access;
  9. Removing access rights
  10. Archiving details of all important incidents relating to the use and management of user identity and secret authentication information;
  11. Organization’s role with privileged access.

Related Product : ISO 27001 Lead Auditor Training And Certification ISMS

Other Information- When defining rules on access control, care needs to be taken to understand the following implications:

  • Establishing rules underpinned by the principle “Everything is generally prohibited unless expressly authorized” rather than the weaker rule “Everything is generally permitted unless expressly prohibited”;
  • Changes to information labels automatically introduced by information processing facilities and those implemented at the user’s discretion;
  • User authorization changes that are automatically initiated by an administrator and the information system;
  • Rules requiring specific prior approval and those without approval
  • Regulations on access control should be assisted by defined and structured procedures.
  • Access management based on responsibilities is a method that many organizations have successfully used in relating access rights to business roles.

Also Read : ISO 27001 Annex : A.8.3 Media Handling

In the guidelines of access control policy, two of the common principles are:
  1. Need-to-know: only the information you need to execute your tasks is accessible to you (specific tasks/roles mean different needs-to-know and therefore different access profiles);
  2. Need-to-use: you grant access to information processing facilities (IT software, programs, protocols, rooms) that you would need to execute your task/job/role.

In order to keep the organization’s assets (IT, software, programs, and protocols) safe, certain access controls are required to prevent unauthorized users from accessing your assets. The criteria for access management, access rights, and limitations of specific user roles on their assets are being defined in Annex 9 of Standard 27002. At Infosavvy, we do have certain standards to follow to ensure that our assets remain secure and that we apply for one of the most important information security certificates. i.e. IRCA CQI ISO 27001:2013 Lead Auditor (LA) and ISO 27001 Lead Implementer (LI) (TÜV SÜD Certification) . Our well-trained and professional trainers will help you by providing you with comprehensive information and several examples to enhance an applicant’s ability to handle security management, to ensure the right access to the right user.

Questions related to this topic
  1. What are the 3 types of access control?
  2. What are access control procedures?
  3. What are the six main categories of access control?
  4. How does access control protect data?
  5. What is ISO 27001 Annex : A.9 Access Control?

ISO 27001 Requirements

Clause 4.2 Understanding the needs and expectations of interested parties 
Clause 4.4 Information security management system
Clause 4.3 Determining the scope of the information security management system
Clause 5.1 Leadership and commitment
Clause 5.2 Policy
Clause 5.3 Organizational roles, responsibilities and authorities 
Clause 6.1 Actions to address risks and opportunities
Clause 6.1.2 Information security risk assessment process
Clause 6.1.3 Information security risk treatment
Clause 6.2 Information security objectives & planning
Clause 7.1 Resources
Clause 7.2 Competence
Clause 7.3 Awareness
Clause 7.4 Communication
Clause 7.5 Documented information Implementation Guideline
Clause 8.1 Operational planning & control
Clause 8.2 Information security risk assessment
Clause 8.3 Information security risk treatment
Clause 9.1 Performance evaluation Monitoring, measurement, analysis & evaluation
Clause 9.2 Internal audit
Clause 9.3 Management review
Clause 10.1 Non conformity and corrective action
Clause 10.2 Continual Improvement 

ISO 27001 Annex A Controls

Annex A.5 Information Security Policies
Annex A.6 Organization of Information Security
Annex A.6.2 Mobile Devices and Teleworking
Annex A.7 Human Resource Security
Annex A.7.2 During Employment
Annex A.7.3 Termination and Change of Employment
Annex A.8 Asset Management
Annex A.8.1.3 Acceptable Use of Assets & A.8.1.4 Return of Assets
Annex A.8.2 Information Classification
Annex A.8.2.2 Labeling of Information & A.8.2.3 Handling of Assets
Annex A.8.3 Media Handling
Annex A.9.1.2 Access to Networks and Network Services
Annex A.9.2 User Access Management
Annex A.9.2.3 Management of Privileged Access Rights  
Annex A.9.2.4 Management of Secret Authentication Information of Users
Annex A.9.2.5 Review of User Access Rights 
Annex A.9.2.6 Removal or Adjustment of Access Rights
Annex A.9.3 User Responsibilities
Annex A.9.4 System and Application Access Control
Annex A.9.4.4 Use of Privileged Utility Programs 
Annex A.9.4.5 Access Control to Program Source Code
Annex A.10 Cryptography
Annex A.11 Physical and Environmental Security
Annex A.11.2 Equipment
Annex A.11.1.3 Securing Offices, Rooms and Facilities
Annex A.11.1.4 Protecting Against External and Environmental Threats
Annex A.11.1.5 Working in Secure Areas
Annex A.11.1.6 Delivery and Loading Areas

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