A developer has created an open-source tool named Velio to combat prompt injection attacks by sanitizing text input for large language models. The tool identifies and removes or marks specific Unicode characters, such as zero-width spaces and bidirectional overrides, which can be used to hide malicious instructions from users but are still processed by LLMs. Velio is available as a Python library and a REST API, offering different modes for stripping or marking these hidden characters. AI
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IMPACT Provides a practical defense against a subtle prompt injection vector, enhancing LLM security for operators.
RANK_REASON A developer released a new open-source tool for a specific security problem.