Reliability vs. Architectural Complexity

Design resilience through segmentation and standardised patterns, ensuring each protective layer demonstrably reduces net failure exposure under NIS2 security-of-network obligations.

CyberTRIZ analysis · Telecommunications contradiction RO003 · one of 8,235 worked contradictions published by CyberTRIZ.AI

Regulations

EU_NIS2 ISO_27001 IEC_62443 ISO_22313 NIST_RMF

Business Context

Additional protection layers, monitoring systems, backup paths, control mechanisms, and recovery processes can increase network reliability. Each added mechanism, however, introduces configurations, interfaces, dependencies, software, testing requirements, and potential failure modes. A network designed for greater reliability can therefore become so complex that operational errors and hidden interactions create new reliability problems.

Telecommunications TRIZ Resolution

Reliability should be achieved through simpler failure behavior rather than continuous accumulation of protective components. Clear failure domains, standardized resilience patterns, automated recovery, reduced dependency chains, and reusable protection mechanisms can replace multiple overlapping controls. Each reliability mechanism should eliminate more failure exposure than complexity it introduces.

Applicable TRIZ Principles

Principle 1 – Segmentation creates clear failure domains that limit propagation.

Principle 2 – Taking Out removes unnecessary dependencies and overlapping reliability mechanisms.

Principle 6 – Universality uses common resilience mechanisms across multiple components.

Expected Outcome

Higher network reliability

Reduced architectural complexity

Easier fault diagnosis

More predictable recovery behavior

Decision Indicators

Early indicators include:

Reliability mechanisms themselves generate operational incidents.

Failure paths are difficult to predict because of excessive dependencies.

Multiple backup systems interact unexpectedly.

Troubleshooting time increases as resilience features expand.

Operators hesitate to modify protection configurations because their interactions are poorly understood.

TRIZ principles applied

P1 SegmentationP2 Taking outP6 Universality

Controls that address this (22)

EU_NIS2-CTRL-001 - Daily safeguarding reconciliationoperational · critical priority · Daily reconciliation between safeguarded customer balances, core ledger balances and safeguarded bank accounts. Variances above EUR 100 must EU_NIS2-CTRL-002 - Critical ICT incident reportingoperational · critical priority · All major ICT incidents impacting payment services, customer data or availability must be classified within 4 hours and reported under DORA EU_NIS2-CTRL-003 - GDPR breach notification workflowoperational · critical priority · Personal data breaches must be assessed within 12 hours and reported to the Belgian DPA within 72 hours where risk to data subjects exists.