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FTA
Also known as: Fault Tree Analysis
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. 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
FMEA
Failure Mode and Effects Analysis — qualitative analysis of how components fail and what they cause.
FMEDA
Failure Mode, Effects, and Diagnostic Analysis — quantitative ISO 26262 hardware metric analysis.
Attack Tree
Graphical representation of attacker goals, sub-goals, and the steps that achieve them.
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