Under the Indian Copyright Act, 1957 (amended 2012) and the IT Act, 2000:
While users may have seen this as a convenient way to access movies, it was illegal and had serious implications for the creators and distributors of the content. Copyright infringement, loss of revenue for the film industry, and the potential for malware infections from less reputable sites were significant concerns. tamilrockers+2009+tamil+movies+download+work
Here is the direct answer to your core query: It is highly unreliable and increasingly dangerous. Under the Indian Copyright Act, 1957 (amended 2012)