Training Data Extraction via Divergent Repetition Attack - ATR-2026-00502 (1736134c-6aa2-59b4-bae2-df4520315d33)
Detects prompts requesting the AI to repeat a word or phrase indefinitely without stopping. This technique exploits model memory to force divergent, repetitive output which can reveal training data fragments embedded near the memorised token. Also a denial-of-service vector (runaway token consumption / resource exhaustion). The defining markers are: (1) a repeat/ write/say/output verb, (2) a word/phrase/sequence target, (3) a forever/without-stopping/ indefinitely/continuously qualifier. Generalised from promptfoo divergent-repetition plugin corpus - hardcoded word targets (poem, company, function, hello) replaced with generic word/phrase/sequence patterns.