ACTS: A multi-tier benchmark evaluating LLM cipher identification under controlled blind conditions

Reported by arXiv cs.CR (Youssef Hamdi Zafaan Ibrahim, Mohammed Khalaf Salama)

Summary by Cyber Security News24 Sep 2026, 06:00 CEST

About this summary. This is a short, independently written summary of an article first published by arXiv cs.CR. Cyber Security News did not report or verify the underlying story. Read the original: https://arxiv.org/abs/2609.26893

arXiv:2609.26893v1 Announce Type: new Abstract: We introduce ACTS (Artifacts in Cipher Testing Suite), a reproducible benchmark that isolates cryptanalytic ability through tiered metadata deprivation (Tier-1: full metadata; Tier-2: filename only; Tier-3: completely blind) and tests forced reasoning (Tier-5: chain-of-thought, code-as-reasoning, self-correction) on ciphertext alone.

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