Broken Link Hijacking - How expired links can be exploited.
Broken Link Hijacking (BLH) exists whenever a target links to an expired domain or page. Broken Link Hijacking comes in two forms, reflected and stored. This issue has been exploited in the wild numerous times, but surprisingly few researchers actively look for broken links in bug bounty programs.
This post aims to give you a basic overview of the different issues that could possibly arise if a target links to an expired endpoint.