Adversarial Tokenization
Paper • 2503.02174 • Published
Research checkpoint from a study of tokenization (reader) invariance and its
effect on robustness to adversarial re-tokenization. Fine-tuned from
allenai/OLMo-2-1124-7B-Instruct.
These are research artifacts, not products. Numbers below are measured on a 200-prompt AdvBench holdout that was excluded from training by construction.
| metric | value |
|---|---|
| — | not yet measured |
AdvTok ASR is attack success rate under adversarial tokenization
(Geh et al., arXiv:2503.02174), Llama-Guard-3-8B judged, greedy decoding.
XSTest over-refusal is the refusal rate on safe prompts — the cost side.
| field | value |
|---|
| group | relative L2 |
|---|
Base model
allenai/OLMo-2-1124-7B