Tool · curated 9 Aug 2026
Strip hidden unicode tags from python strings in order to avoid malicious prompt injection attacks
First reported github.com
Coverage timeline
Single-source research — first reported, latest, and curated coincide.
Why it matters
Hidden Unicode tag characters are a known vector for smuggling invisible instructions into LLM prompts, and a runnable sanitizer helps defenders neutralize such prompt-injection payloads before they reach a model.
A GitHub gist titled "strip-unicode-tags.py" by user r-leyshon provides a Python script to strip hidden Unicode tag characters from strings in order to defend against malicious prompt injection attacks that abuse invisible/hidden Unicode characters.