Top 5 Bug Bounty Platforms to Watch in 2021 While Gartner does not have a dedicated Magic Quadrant for Bug Bounties or Crowd Security Testing yet, Gartner Peer Insights already lists 24 vendors in the "Application Crowdtesting Services" category. We have compiled the top 5 most promising bug bounty platforms for those of you who are looking to enhance your existing software testing arsenal with knowledge and expertise from international security researchers: 1. HackerOne Being a unicorn backed by numerous reputable venture capitalists, HackerOne is probably the most well-known and recognized Bug Bounty brand in the world. According to their most recent annual report, over 1,700 companies trust the HackerOne platform to augment their in-house application security testing capacities. The report likewise says that their security researchers earned approximately $40 million in bounties in 2019 alone and $82 million cumulatively.