During 2021, 9kmovies experienced high traffic due to the release of popular films that had mixed theatrical and digital releases. Top hits often pirated included films like Spider-Man: No Way Home , Shang-Chi and the Legend of the Ten Rings , Venom: Let There Be Carnage , and Black Widow .

Data from that period showed high engagement, particularly from regions with high demand for free content. The user base expanded as people searched for ways to view premium content without subscriptions.

: These websites are often "flooded with ads" that lead to unintended redirections. These redirects can trigger the installation of malware or "fileless malware" that can steal personal data without the user's knowledge.