R. Krishnachaitanya has come first and bagged a cash prize of Rs. 5 lakh in the EMC Defenders League, a Hackathon contest on cyber security, organised by EMC Corporation in Bangalore, a press release said. The event featured 4,000 participants from across the country, of which 30 made it to the final round. The contest was aimed at rewarding developers and students who have a thorough knowledge of Internet security. All the 30 finalists received iPad mini tablets from EMC Corporation.