https://techcrunch.com/2022/04/28/hackerone-buys-yc-backed-pullrequest-to-add-code-review-to-bug-squashing-platform/

PullRequest, a five year old startup that came out of Y Combinator in 2017, helps software developers by providing an external code review team. This not only helps find bugs in code that might have been missed, it also helps identify security vulnerabilities before the software hits production.

Perhaps that’s why HackerOne, a bug bounty company, acquired PullRequest today.