Big breaches of security are never fun, but when you're the provider of cloud storage that holds all kinds of personal data, things can get particularly hairy when someone finds a way through. That's the situation Apple finds itself in today, or at least, that's the claim.

The European Central Bank said Thursday that email addresses and other contact information have been stolen from a database that serves its public website, though it stressed that no internal systems or market-sensitive data were compromised. The security breach involved a database serving...