PR.PT-3: The principle of least functionality is incorporated by configuring systems to provide only essential capabilities.

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The organization shall configure the business-critical systems to provide only essential
capabilities.
Guidance
Consider applying the principle of least functionality to access systems and assets (see also PR.AC-4).

The organization shall disable defined functions, ports, protocols, and services within its critical systems that it deems unnecessary.

The organization shall implement technical safeguards to enforce a deny-all, permit-byexception policy to only allow the execution of authorized software programs.

See how Cyberday guides you to fulfill this requirement:
This requirement is part of the framework:  
CyberFundamentals (Belgium)
Free compliance assessment:
Best practices
How to implement:
PR.PT-3: The principle of least functionality is incorporated by configuring systems to provide only essential capabilities.
This policy on
PR.PT-3: The principle of least functionality is incorporated by configuring systems to provide only essential capabilities.
provides a set concrete tasks you can complete to secure this topic. Follow these best practices to ensure compliance and strengthen your overall security posture.

The organization shall configure the business-critical systems to provide only essential
capabilities.
Guidance
Consider applying the principle of least functionality to access systems and assets (see also PR.AC-4).

The organization shall disable defined functions, ports, protocols, and services within its critical systems that it deems unnecessary.

The organization shall implement technical safeguards to enforce a deny-all, permit-byexception policy to only allow the execution of authorized software programs.

Read below what concrete actions you can take to improve this ->
Frameworks that include requirements for this topic:
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How to improve security around this topic

In Cyberday, requirements and controls are mapped to universal tasks. A set of tasks in the same topic create a Policy, such as this one.

Here's a list of tasks that help you improve your information and cyber security related to
PR.PT-3: The principle of least functionality is incorporated by configuring systems to provide only essential capabilities.
Task name
Priority
Task completes
Complete these tasks to increase your compliance in this policy.
Critical
No other tasks found.

How to comply with this requirement

In Cyberday, requirements and controls are mapped to universal tasks. Each requirement is fulfilled with one or multiple tasks.

Here's a list of tasks that help you comply with the requirement
PR.PT-3: The principle of least functionality is incorporated by configuring systems to provide only essential capabilities.
of the framework  
CyberFundamentals (Belgium)
Task name
Priority
Task completes
Complete these tasks to increase your compliance in this policy.
Critical
Ensuring system hardening
Critical
High
Normal
Low
18
requirements
Technical cyber security
Network security

Ensuring system hardening

Completing this task also progresses your compliance in all of the following frameworks and requirements. Cyberday automatically maps completed tasks to all of these current and future frameworks - so you do not have to do it again!

The principle of least functionality in systems
Critical
High
Normal
Low
6
requirements
System management
Data system management

The principle of least functionality in systems

Completing this task also progresses your compliance in all of the following frameworks and requirements. Cyberday automatically maps completed tasks to all of these current and future frameworks - so you do not have to do it again!

Automatic blocking and detecting of unauthorized software
Critical
High
Normal
Low
22
requirements
Technical cyber security
Malware protection

Automatic blocking and detecting of unauthorized software

Completing this task also progresses your compliance in all of the following frameworks and requirements. Cyberday automatically maps completed tasks to all of these current and future frameworks - so you do not have to do it again!

The ISMS component hierachy

When building an ISMS, it's important to understand the different levels of information hierarchy. Here's how Cyberday is structured.

Framework

Sets the overall compliance standard or regulation your organization needs to follow.

Requirements

Break down the framework into specific obligations that must be met.

Tasks

Concrete actions and activities your team carries out to satisfy each requirement.

Policies

Documented rules and practices that are created and maintained as a result of completing tasks.

Never duplicate effort. Do it once - improve compliance across frameworks.

Reach multi-framework compliance in the simplest possible way
Security frameworks tend to share the same core requirements - like risk management, backup, malware, personnel awareness or access management.
Cyberday maps all frameworks’ requirements into shared tasks - one single plan that improves all frameworks’ compliance.
Do it once - we automatically apply it to all current and future frameworks.