Apple has issued a new follow-up statement on this week’s celebrity photo leaks via iCloud. “After more than 40 hours of investigation, we have discovered that certain celebrity accounts were compromised by a very targeted attack on user names, passwords and security questions, a practice that has become all too common on the Internet,” the company writes. “None of the cases we have investigated has resulted from any breach in any of Apple’s systems including iCloud or Find My iPhone. We are continuing to work with law enforcement to help identify the criminals involved.”…