Citibank Closes Credit Card Account Without Notification After Security Breach

Here's one example of why it's a good idea to regularly log into your credit card account. You might learn that your account has been closed due to a security breach. That's what happened to a Citibank customer profiled in this Consumerist article. She didn't get an answer from Citibank about why there was no email or phone notification.

Have you had a credit card account closed or frozen without notification?