This is kind of a thing already in the EU. Under NIS 2, vulnerabilities should be notified to a CSIRT as well as upstream, and the CSIRT shall identify downstream vendors and negotiate a disclosure timeline. I don't know whether they're any good at it or not, though.
This is kind of a thing already in the EU. Under NIS 2, vulnerabilities should be notified to a CSIRT as well as upstream, and the CSIRT shall identify downstream vendors and negotiate a disclosure timeline. I don't know whether they're any good at it or not, though.