The world’s largest social network, Facebook has paid over $3 million since 2011 to security researchers who find bugs on its website. India topped the list by submitting the largest number of valid bugs. “India contributed the largest number of valid bugs again this year at 196, with an average reward of $1,343,” Facebook said in a post. Next places followed by Egypt and US with 81 and 61 bugs and rewarded with $1,220 and $2,470 . UK was in fourth place and phillippines was in fifth with 28 and 27 bugs.