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A developer built Arc Gate, a monitoring proxy for LLMs that uses Fisher information manifold geometry to detect session-level prompt injection attacks, identifying Crescendo-style gradual manipulation by tracking t-values against a phase transition threshold t* = 1.2247 rather than per-turn phrase detection.
This paper introduces Shesha, a geometric stability metric that quantifies directional coherence of single-cell CRISPR perturbation responses using mean cosine similarity, revealing regulatory architecture and predicting cellular stress across 2,200+ perturbations in five CRISPR datasets.