Logic Solver Availability vs Cybersecurity Controls
Implement secure-by-design logic solver architecture with network segmentation so cybersecurity controls never compromise continuous safety function availability.
CyberTRIZ analysis · Seveso contradiction FS026 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Business Context
Safety Logic Solvers must remain continuously available to execute
Safety Instrumented Functions whenever hazardous conditions occur. At
the same time, cybersecurity controls such as authentication, patching,
and access restrictions are necessary to protect these critical systems
from unauthorized access.
The Contradiction
Stronger cybersecurity improves system protection.
Additional security controls may reduce operational availability and
maintenance efficiency.
Why It Exists
Functional safety requires continuous availability, while cybersecurity
introduces additional operational controls that may complicate
maintenance, diagnostics, and engineering support.
Direction
Design Safety Instrumented Systems using secure-by-design principles,
network segmentation, controlled remote access, and maintenance
procedures that preserve both cybersecurity and functional safety.