PG Diploma in Cyber Law is 1- year postgraduate course . eligibility criteria is:

-Candidates aspiring to pursue the course need to have completed graduation (with 50%) in any discipline from a recognized university.

- They are required to qualify one of the relevant entrance examinations for admission to the course, such as CLAT , AILET  , LSAT, KIITEE etc.

Here is a list of colleges which offer Cyber Law:

https://law.careers360.com/colleges/list-of-llm-in-cyber-law-colleges-in-india

Hope this helps!