@article{longguardmechanisticanalysisandtrainingf,
  title = {LongGuard: Mechanistic Analysis and Training-Free Mitigation of Long-Context Failure in Safety Guardrails},
  author = {Ziyang Chen and Xing Wu and Songlin Hu},
  year = {2026},
  eprint = {2608.27580},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.27580},
}