Glossary · Functional Safety
Also known as: Fault Tree Analysis
FTA: Fault Tree Analysis — top-down deductive analysis of how failures combine to a hazardous event. FTA decomposes a top-level hazardous event into AND/OR combinations of basic failures.
Where this matters: Functional Safety Engineering (ISO 26262)
It is used for both safety (ISO 26262) and cybersecurity (where attack trees mirror its structure). Quantitative FTA propagates failure rates upward to a top-event probability.
Related terms
Failure Mode and Effects Analysis — qualitative analysis of how components fail and what they cause.
Failure Mode, Effects, and Diagnostic Analysis — quantitative ISO 26262 hardware metric analysis.
Graphical representation of attacker goals, sub-goals, and the steps that achieve them.
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