Citibank ATM Problem?

There appears to be problem with Citibank's ATMs -- namely, that customers are being locked out of them. The problem, whatever it is, appears to be confined to Canada, Great Britain, and Russia, and is not in the United States. It is not possible to say at this time if it is a privacy problem or even a security breach, and it appears Citibank is working on the problem. Citibank hasn't issued a formal statement, but check Tuesday's Wall Street Journal for an article dealing with this.

Clearly, if there is a security breach, they have an obligation to contact their affected customers as soon as possible. Which would also, if it needs to be said, be a good business practice as well.