Downloading movies from Tamilrockers or similar websites raises several concerns:

Piracy has become a significant threat to the film industry, with millions of dollars lost each year due to the illegal distribution of movies. Websites like Tamilrockers, which provide links to download or stream pirated copies of movies, have made it easier for people to access copyrighted content without paying for it. The ease of access and the low cost (often, zero cost) have made piracy a tempting option for many.

If you're interested in watching a specific Tamil movie, I suggest exploring alternative options: