noun, noun or participle which takes 'suru'
illegal downloading
Refers to the act of downloading copyrighted material without permission, often in the context of piracy.
違法ダウンロードは著作権法違反になることがあります。
Illegal downloading can be a violation of copyright law.
彼は映画を違法ダウンロードし
He ended up illegally downloading a movie.