The creator of Have I Been Pwned (HIBP) is open-sourcing the code base to make the project more sustainable and community-driven. The decision comes after a failed merger and acquisition process, which made the creator realize the importance of community contributions. The code base will be opened up incrementally, with the goal of making the project self-sustaining. The data used by HIBP, however, is not being open-sourced due to its sensitive nature.