A few years ago, if someone found a vulnerability in a website, it was not easy to find the right method to contact the web application owners and then too after contacting them it was not guaranteed that they would respond in time or even at all. Then there was also the factor of the web application owners threatening to sue the reporter. All of these problems were solved by vulnerability co-ordination platforms or bug bounty platforms. A bug bounty platform is a platform that manages programs for different companies. The management includes:

• Reports
• Communication
• Reward payments

There are a number of different bug bounty platforms being used by companies nowadays. The top six platforms are explained in the following sections.