Brief Overview of ISO/IEC 27400: Comprehensive standard on IoT Security and Privacy

ISO/IEC 27400 is a newly released comprehensive standard that provides guidelines on risks, principles, and controls for the security and privacy of Internet of Things (IoT) solutions. This standard also refers to other standards that include ISO/IEC 20924, ISO/IEC 27000, ISO/IEC 29100, ISO 31000, etc.

Identified Stakeholders

ISO/IEC 27400 standard identifies three stakeholders responsible for the security of IoT solutions as mentioned below:

  • IoT Service Provider - Responsible for providing services that include the operation of the IoT ecosystem. They are responsible for connectivity, data collection, and managing deployed IoT devices/solutions.
  • IoT Service Developer - Responsible for designing, implementing, and integrating IoT services. It is expected that the developer follows standard practices to secure the IoT ecosystem.
  • IoT User - The end user (including human and digital users) of the IoT ecosystem.

Recommended Standards referred in ISO/IEC 27400

StandardDescription
ISO/IEC 27000Information Security Management System (ISMS)
Widely used by the industry
ISO/IEC 27701extended requirements to ISMS for privacy information management
ISO/IEC 29134guidelines on privacy impact assessment
IEC 62443guidance in the domain of security of Industrial Automation and Control Systems (IACS)
ISO 31000guidelines on risk management
ISO/IEC 27005providing information security-specific guidelines for risk management

Identified Controls in ISO/IEC 27400

ISO/IEC 27400 has 45 controls to secure the deployed IoT solutions. In addition, the standard clearly identifies the purpose of control, responsible stakeholders, domain, and guidance on how to implement the IoT solutions securely.

Notations

  • IoT Service Developer - ISD
  • IoT Service Provider - ISP
  • IoT User - IU
  • IoT Device Developer - IDD
Controls related toResponsible Stakeholders
IoT security policyISD/ISP
Responsibility for IoT security in an organizationISD/ISP
Asset managementISP
Equipment and assets located outside physically secured areasISP
Secure disposal or re-use of equipmentISP
Learning from security incidentsISD/ISP
Secure IoT system engineering principlesISD
Secure development environment and proceduresISD
Security of IoT systems in support of safetyISD/ISP
Security in connecting varied IoT devicesISD/ISP
Verification of IoT devices and systems designISD/ISP
Monitoring and loggingISD/ISP
Protection of logsISD/ISP
Use of suitable networks for the IoT systemsISD/ISP
Secure settings and configurations in delivery of IoT devices and servicesISD/ISP
User and device authenticationISD/ISP
Define provision of software and firmware updatesISD/ISP
Sharing vulnerability informationISD/ISP
Adapted security measures to the life cycle of IoT systems and servicesISD/ISP
Guidance for IoT users on the proper use of IoT devices and servicesISD/ISP
Determination of security roles for stakeholdersISD/ISP
Management of vulnerable devicesISP
Management of supplier relationships in IoT securityISD/ISP
Secure disclosure of Information regarding the security of IoT devicesISD
Contacts and support serviceIU
Initial settings of IoT device and serviceIU
Deactivation of unused devicesIU
Secure disposal or re-use of IoT deviceIU
Prevention of privacy-invasive eventsISD/ISP
IoT privacy by defaultISD/ISP
Provision of the privacy noticeISP
Verification of IoT functionalityISD/ISP
Consideration of IoT usersISD/ISP
Management of IoT privacy controlsISP
Unique device identityISD
Fail-safe authenticationISD/ISP
Minimization of indirect data collectionISP
Communication of privacy preferencesISP
Verification of automated decisionISP
Accountability for stakeholdersISD/ISP
Unlinkability of PIIISD/ISP
Sharing information on PII protection measures of IoT devicesIDD
Privacy controls for IoT userIU
Purposeful use for connecting with other devices and servicesIU/ISP/ISD
Certification/validation of PII protectionIU

References

ISO/IEC 27400

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