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Security-One 27B

Superagent's security triage model: a continual fine-tune of AutoJev-27B that returns calibrated probabilities for prompt-injection and content checks, with a release policy at 0.70 unsafe.

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Author
Superagent
Last verified
Oct 2026

Highlights

  • Self-reported BIPIA overall 99.75% and attack detection 99.83% on frozen row-identical inputs, against AutoJev's 46.00% and Jev's 71.75%.
  • The card calls BIPIA a frozen binary detector adaptation over email, table, and code contexts — not the original generative leaderboard task.
  • Calibration temperature 0.1453 with a release policy that flags unsafe at P(unsafe) >= 0.70.
  • Trained with a rank-32 LoRA in 16 updates over 18,106 examples, with a hash audit finding zero overlaps in 1,230 protected rows.

Watch out

The repository is gated behind conditions, the validated production path is SGLang on a B200 with a 65,536-token classification context, and chat prompting does not reproduce the numbers. Its NotInject benign-only 87.61% cannot measure attack recall, and the card says prompt injection remains unsolved.

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