Cybersecurity researchers have discovered a novel attack technique called TokenBreak that can be used to bypass a large language model's (LLM) safety and content moderation guardrails with just a single character change.
"The TokenBreak attack targets a text classification model's tokenization strategy to induce false negatives, leaving end targets vulnerable to attacks that the implemented



Source: TheHackerNews
Source Link: https://thehackernews.com/2025/06/new-tokenbreak-attack-bypasses-ai.html