Kickstarter Hacked, Damnit!

In June I opened a Kickstarter account intending to crowdfund a book. I chose Indiegogo instead, and now regret considering the other. As you can see from the screen capture of the email I received today, Kickstarter informed registered users that it has been hacked. While I don’t use the same password for every  website, there’s concern enough to consider changing others. Lovely.

My question: Why did law enforcement, and not Kickstarter, catch this?