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System Hardening

What is System Hardening?

The process of securing a system by reducing its attack surface through removing unnecessary software, closing unused ports, and applying security configurations.

Information Security

Each of these is named in at least one of the same controls as system hardening. The number is how many controls name both.

What the standards actually require on system hardening

Requirements naming system hardening across 6 standards, quoted from the control text.

Harden operating systems based on vendor guidance and ASD guidance. Remove unneeded software, services and ports.

ASD37-11 · Operating system hardening (Very Good)

Reduce the cyber attack surface of SWIFT-related components by performing system hardening on all in-scope systems.

2.3 · System Hardening
C5 (Germany)1 control

Harden production system components to generally accepted industry standards, document the hardening requirements for each component, verify immutable images against those requirements when the images are created, and retain configuration and log files evidenc...

C5-OPS-23 · Managing Vulnerabilities, Malfunctions and Errors - System Hardening

Disclose and operate malware detection + system hardening + cybersecurity upgrade features per MDS2 MLDP + SAHD + CSUP sections. Malware Detection and Protection (MLDP) including anti-malware software support + signature update mechanism + behavioural detectio...

MDS2-Malware-Detection-MLDP-System-Hardening-SAHD-Cybersecurity-Upgrades-CSUP-Patch-Management · MDS2 Malware Detection + MLDP + System Hardening + SAHD + Cybersecurity Upgrades + CSUP + Patch Management

Apply NZISM Chapters 10 (Network Security) + 11 (System Hardening) + 12 (Software Security and Application Development) covering: network segmentation with cross-domain solutions where applicable + perimeter defence + intrusion detection/prevention + system ha...

NZISM-5 · Network Security, System Hardening, and Application Security
PCI DSS 4.01 control

Configuration standards are developed, implemented, and maintained to: • Cover all system components. • Address all known security vulnerabilities. • Be consistent with industry-accepted system hardening standards or vendor hardening recommendations.

2.2.1 · Configuration standards are developed, implemented, and maintained to: • Cover all system components. • Address all known security vulnerabilities. • Be consistent with industry-accepted system hardening standards or vendor hardening recommendations. • Be updated

Questions people ask about system hardening

What is System Hardening?
The process of securing a system by reducing its attack surface through removing unnecessary software, closing unused ports, and applying security configurations.
Why is System Hardening important for compliance?
System Hardening is a key concept in Information Security. Understanding system hardening helps organizations meet regulatory requirements, reduce risk, and demonstrate due diligence during audits. Our compliance platform maps 686 frameworks with 311K cross-framework control mappings.
Which compliance frameworks address System Hardening?
System Hardening appears in the requirement text of ASD Strategies to Mitigate Cyber Security Incidents, BRCGS Global Standard for Food Safety Issue 9, C5 (Germany), MDS2 (Medical Device), New Zealand Information Security Manual (NZISM). Across these standards we have identified 6 controls that name it directly, each linked to the control text on the compliance platform.
Where can I learn more about System Hardening?
Explore our compliance framework pages to see how system hardening applies across different standards and regulations. Our implementation guides provide step-by-step guidance, and the compliance platform offers AI-powered analysis of how this concept maps across 686 frameworks.

See how System Hardening applies across compliance frameworks

Our platform maps 686 frameworks with 311K cross-framework control mappings. Explore how this concept is addressed across standards.

Written and maintained by Gerard Blokdyk, The Art of Service.