The leaking of explicit celebrity photos and videos was not the result of breaches in the security of Apple's computer systems, the company has said.
The US tech giant said none of the cases it had so far investigated were a result of its iCloud or Find my iPhone systems being hacked but as a result of a "very targeted attack" on the security procedures of celebrity accounts.
The leaking of the private photos of famous female stars sparked initial suggestions that Apple's iCloud service had been compromised to access the images and leak them across the internet.
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.
Emma Watson has hit out at a popular "lack of empathy" towards the celebrity victims of a photo hacking scandal.
Celebrities including Hollywood actress Jennifer Lawrence have threatened to take legal action after naked snaps of them are hacked.