Goal Structuring Notation (GSN)

Goal Structuring Notation (GSN) is a visual method used to clearly represent the reasoning behind a safety or security case. It organizes and displays how specific goals or safety claims are supported by evidence and rationales, through connected diagrams. This helps teams and stakeholders understand why a system is considered safe or secure, making complex safety arguments transparent and easier to review. GSN effectively communicates the logic, assumptions, and evidence that underpin safety decisions, aiding in risk management and ensuring accountability.