Running a bug bounty program
Security testing is one area that is particularly easy to outsource. You should keep up to date with the latest security warnings that affect your application, but you can also apply for ethical hackers to try to find weaknesses in your application. Running a bug bounty program requires an investment of your time to answer the reports and a budget to make payments for valid discoveries. However, it is a quick way to get feedback and alternative points of view on your application’s security. You can advertise your program on common forums and your site, and part of being a researcher is finding those adverts.
Security researchers should be familiar with the latest tools and know how to check for the latest vulnerabilities. This can save you time to concentrate on other aspects of product testing without having to recruit someone and make the long-term commitment of paying their salary. Researchers are particularly good at finding common problems...