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README.md

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+---
+license: cc-by-4.0
+language: [en, tr]
+task_categories: [text-classification]
+tags: [prompt-injection, llm-security, ai-security, unicode, invisible-text, red-teaming, security, agent-security]
+pretty_name: "Invisible Unicode Prompt Injection"
+size_categories: [n<1K]
+configs: [{config_name: default, data_files: iui.jsonl}]
+---
+
+![banner](banner.png)
+
+# Invisible Unicode Prompt Injection
+
+```python
+from datasets import load_dataset
+ds = load_dataset("fevziegeyurtsevenler/invisible-unicode-injection")
+```
+
+42 examples where innocent visible text hides an instruction in **invisible Unicode** (Tags block U+E0000–E007F, zero-width). The model reads the payload; a human reviewer sees nothing. Decode + detect them.
+
+Each row: `visible_text` (innocent), `hidden_payload` (decoded), `full_text` (with the real invisible chars), `technique`, `detected_by` (uncloak rule), `owasp`, `severity`, `defense`. **Scanned by [uncloak](https://github.com/fevziegeyurtsevenler/uncloak).**
+
+## Schema
+| column | meaning |
+|---|---|
+| visible_text | what a human sees |
+| hidden_payload | decoded hidden instruction |
+| full_text | text with the invisible characters |
+| technique, detected_by, owasp, severity, defense | labels |
+
+## Related AltaySec resources
+- 🕵️ **uncloak** — hidden prompt-injection scanner: [GitHub](https://github.com/fevziegeyurtsevenler/uncloak) · [live demo](https://fevziegeyurtsevenler.github.io/uncloak/)
+- 📚 Datasets: [detection-rules](https://huggingface.co/datasets/fevziegeyurtsevenler/prompt-injection-detection-rules) · [glossary](https://huggingface.co/datasets/fevziegeyurtsevenler/ai-security-glossary) · [skills-in-the-wild](https://huggingface.co/datasets/fevziegeyurtsevenler/skills-in-the-wild) · [agent-skill-vulnerabilities](https://huggingface.co/datasets/fevziegeyurtsevenler/agent-skill-vulnerabilities)
+- 🌐 [AltaySec](https://altaysec.com.tr) · [Açık Kaynak Lab](https://altaysec.com.tr/acik-kaynak)
+
+## Citation
+```bibtex
+@misc{yurtsevenler2026invisibleunicodeinjection,
+  title  = {Invisible Unicode Prompt Injection Dataset},
+  author = {Yurtsevenler, Fevzi Ege},
+  year   = {2026},
+  publisher = {AltaySec / Hugging Face},
+  howpublished = {\url{https://huggingface.co/datasets/fevziegeyurtsevenler/invisible-unicode-injection}}
+}
+```
+
+⚠️ Defensive / authorized-use only. Multilingual-first LLM/agent security research by **[AltaySec](https://altaysec.com.tr)**.