I also got an e-mail:

Notice something about this e-mail. There is absolutely nothing you can click on! You can't make any kind of response to this e-mail. It's impossible for a message from them to be used as a phishing attempt or security breach, because they never provide a means to respond within the e-mail.
This is the way an organization should send you a security warning.
About the only thing I'd change is, next to the 877 number, I'd put "Or the customer service number on the back of your card if you prefer."
I thought about the fact I like this so much that I called them and suggested it, and also told them I really like the fact they don't put any links in their e-mail.