Framework overlap

Does FISMA cover Belgium CyberFundamentals?

You hold FISMA and have been told to do Belgium CyberFundamentals. Here is how much overlaps, control by control.

45% of Belgium CyberFundamentals you already have

FISMA already covers about 45% of Belgium CyberFundamentals, leaving 24 of 44 controls as genuinely new work.

Already covered 0 Likely covered 20 New work 24

No control in FISMA maps directly to one in Belgium CyberFundamentals. Everything counted as covered is covered because both map to the same third standard, which is what a crosswalk is, but it is an inference rather than a lookup.

What is genuinely new work

Nothing in FISMA reaches these. This is the list to scope.

BE-CF-04
Remote access controls
BE-CF-05
Wireless access restrictions
BE-CF-07
Boundary protection and segmentation
BE-CF-09
Denial-of-service protection
BE-CF-10
Transmission confidentiality and integrity
BE-CF-11
Session management controls
BE-CF-12
Network monitoring and defense
BE-CF-18
Incident response planning and testing
BE-CF-19
Incident handling and containment
BE-CF-27
Software usage restrictions
BE-CF-30
Time synchronization
BE-CF-32
Accountability and non-repudiation
BE-CF-33
Asset management and data flow mapping
BE-CF-34
Business environment
BE-CF-35
Cybersecurity governance and policy
BE-CF-36
Supply chain risk management
BE-CF-37
Awareness and training
BE-CF-38
System maintenance
BE-CF-39
Data security lifecycle management
BE-CF-40
Recovery planning
BE-CF-41
Recovery improvements
BE-CF-42
Recovery communications
BE-CF-43
Assurance level selection and scoping
BE-CF-44
NIS2 alignment
Show the 20 you already have
BE-CF-01
Account management and provisioning
BE-CF-02
Access enforcement and least privilege
BE-CF-03
Multi-factor authentication requirements
BE-CF-06
Identity proofing and verification
BE-CF-08
Cryptographic protection of data
BE-CF-13
Risk assessment procedures
BE-CF-14
Vulnerability scanning and management
BE-CF-15
Security categorization
BE-CF-16
Threat intelligence integration
BE-CF-17
Continuous monitoring strategy
BE-CF-20
Incident reporting and notification
BE-CF-21
Forensic analysis capabilities
BE-CF-22
Lessons learned and improvement
BE-CF-23
Baseline configuration establishment
BE-CF-24
Configuration change control
BE-CF-25
Security impact analysis
BE-CF-26
System component inventory
BE-CF-28
Audit event logging and storage
BE-CF-29
Audit record review and analysis
BE-CF-31
Audit log protection and retention

How this is calculated

Already covered means a mapping runs from a control in FISMA to that control. Likely covered means no direct mapping exists but both frameworks map to the same control in a third standard. New work means neither. We keep those separate rather than adding them into one friendlier number, because blending them would present a two-hop inference as a verified fact.

Coverage is not symmetric. Run it the other way and you will get a different number; both are correct.

From 332,959 cross-framework control mappings across 723 frameworks, 531 of them verified against their source documents. It does not tell you that you are compliant: a mapped control means the two standards ask for the same thing, not that you have done it.

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