Both sites are ad-supported. To generate revenue, they run pop-under ads, fake "Download" buttons, and malicious scripts. A user searching for the "best" experience often ends up downloading a fake codec that is actually a Trojan or ransomware.
Accessing sites like 9xmovies carries substantial risks for the end-user: 9xmovies 7star best
Cybersecurity firms like Kaspersky and Norton consistently list movie piracy sites as top vectors for malware. Both sites are ad-supported