Beyond legal and security risks, the user experience on such sites is often terrible:
The user experience on 9xMovies is notoriously frustrating. The site is cluttered with intrusive pop-up ads and misleading download buttons that can lead you to completely different websites. It's common for a single click to open five or more unrelated and potentially dangerous windows. Security experts have tagged 9xMovies for a host of threats, including phishing scams, privacy risks, spam, and potentially unwanted programs. 9xmovies guru free
Many official production houses upload classic films and independent movies legally for free viewing. Beyond legal and security risks, the user experience