Definition of data classifications and class-specific security procedures

Critical
High
Normal
Low

Data classification can be used to give data processors a quick view of how critical data is and how data should be processed and protected.

The data categories used and the corresponding security levels are defined. The category of information is defined by analyzing the confidentiality, integrity and availability of the information in question, as well as any other requirements. Each level is given a clear and descriptive name.

Data classifications can be, for example, the following:

  • disclosure of information does not cause harm (PUBLIC)
  • disclosure of information causes slight inconvenience or minor operational annoyance (CONFIDENTIAL)
  • disclosure of information has significant short-term effects on operations or tactical objectives (LIMITED)
  • disclosure of information has serious implications for long-term strategic objectives or jeopardizes the very existence of the organization (PROHIBITED)

CONFIDENTIAL paper information may require e.g. the following protections:

  • Locked cabinet
  • Trusted transfer partner
  • Sealed envelopes
  • Safe disposal process

CONFIDENTIAL electronic information may require e.g. the following protections:

  • Use the selected encryption level
  • Password protection
  • Safe disposal process
  • More limited access rights
Connected other frameworks and requirements:
T07: Tietojen luokittelu
8.2.1: Classification of information
ISO 27001
8.2.2: Labelling of information
ISO 27001
8.2: Information classification
ISO 27001
8.2.3: Handling of assets
ISO 27001

Documentation of data classes for data sets

Critical
High
Normal
Low

The dataset owners (or the owners of the related information asset, such as a data store or data system) are responsible for the classifications of the datasets and the correspondence of the classification to the definitions of the classes.

The owner updates the data classification over the life cycle of the asset according to variations in its value, sensitivity, and criticality.

Connected other frameworks and requirements:
T07: Tietojen luokittelu
8.2.1: Classification of information
ISO 27001
18.1.3: Protection of records
ISO 27001
ID.AM-5: Resource prioritization
NIST CSF
5.12: Classification of information
ISO 27001

Priority classification of an organization's information assets

Critical
High
Normal
Low

An organization must classify its information assets, such as information systems, data, units, key personnel, and other assets to be protected (e.g., equipment), according to priorities. Prioritization can be done, for example, based on the requirements for confidentiality, integrity, and availability of the information being processed.

Connected other frameworks and requirements:
ID.AM-5: Resource prioritization
NIST CSF
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