---
title: "Breaking Safety at the Token Boundary: How BPE Tokenization Creates Exploitable Gaps in LLM Alignment — Stuff That Spins"
description: "arXiv:2607.01239v1 Announce Type: new Abstract: Character-level perturbations bypass safety alignment in modern LLMs despite leaving prompts human-readable. We identify and test a central structural mechanism: BPE tokenization fragments safety-critical words into sub-word pieces, and the three publ…"
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keywords: ["SpinGraph", "spin analysis", "GEO"]
date: "2026-07-03T04:00:00+00:00"
modified: "2026-07-03T04:00:50.286731+00:00"
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---

# Breaking Safety at the Token Boundary: How BPE Tokenization Creates Exploitable Gaps in LLM Alignment

**Source:** Unknown  
**Published:** July 3, 2026  
**Original:** https://arxiv.org/abs/2607.01239  

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