Additionally, Krebs has stated that Experian has yet another glaring security issue. He's not saying exactly how to do it, or dropping POC in the post.
Given the size and importance of Experian, there's nothing wrong with pointing out this issue, especially when after 4 days they can't even acknowledge an issue this serious.
Krebs stating a vulnerability exists, is more responsible than not disclosing it -- given their importance, and history of security screw-ups, the people have a right to know.