Apple has said it will "deliver a fix" after claims that hackers can bypass the security lockscreen on iPhones that use the company's newly-launched iOS 7 software.
The reported security glitch means that the phone's lockscreen can be bypassed, giving hackers access to texts, emails and photos along with users' Twitter and Facebook accounts.
The problem was discovered soon after iOS 7 became publicly available on Wednesday, but appears to only be an issue with the iPhone 4S and 5 handsets.
A spokesman for Apple told the Guardian: "Apple takes user security very seriously.
"We are aware of this issue, and will deliver a fix in a future software update."