All the big tech companies are always on the lookout for security issues in their products. They encourage people to find and report security issues. Most companies pay the person reporting the issue. The money that is earned by reporting a bug to a major technology company is called Bug Bounty.
Bug Bounty hunting started as a hobby among security enthusiasts but has become a very rewarding interest.
There are many bug bounty hunting programs that run through the year. Some special events also focus on finding security vulnerabilities in major tech products.