What is LK21 and its reputation regarding movie streaming?

LK21 is a website known for hosting a wide variety of movies, including films that are not legally available for streaming. However, it operates in a legally grey area and is often associated with copyright infringement. Its reputation is mixed, with some users appreciating its extensive catalog while others criticize it for facilitating illegal downloads and potentially exposing users to malware. Using LK21 carries risks related to legal repercussions and security.