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ukcli/
Cybersecurity-Dataset-Heimdall-v1.1

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	Cybersecurity Defense Instruction-Tuning Dataset (v1.1)




	
	TL;DR

21 258 high‑quality system / user / assistant triples for training alignment‑safe, defensive‑cybersecurity LLMs. Curated from 100 000 + technical sources, rigorously cleaned and filtered to enforce strict ethical boundaries. Apache‑2.0 licensed.

	1  What’s new in v1.1  (2025‑06‑21)

Change v1.0 v1.1

Rows 2 500 21 258 (+760 %)

Covered frameworks OWASP Top 10, NIST CSF + MITRE ATT&CK, ASD… See the full description on the dataset page: https://huggingface.co/datasets/ukcli/Cybersecurity-Dataset-Heimdall-v1.1.