I also got an email from Ulta suggesting I change my password, but without explaining why. As I was on vacation and at a hotel using their wi-fi, I didn't do anything about it.
I agree with the comment about the hackers - you'd think they could find something more constructive to do with their lives than simply steal and damage other people's lives. Clearly, they have the tech expertise to get a decent job!
I haven't had anything from Kohl's about changing my password, but I'll keep a lookout for it. It's a good habit though to change your passwords regularly. A pain, I know, but unfortunately in today's world, it's only self-defense.
"" A little learning is a dangerous thing."-Alexander Pope