From The Daily Mail:

A security expert has warned Apple’s iOS software contains potentially sinister tools that could be used by governments to spy on iPhone and iPad users.

Speaking at the ‘Hackers on planet Earth’ conference in New York, Jonathan Zdziarski said that most users are unaware of the lack of protection for iPhone data.

He added files found hidden within the firm’s software contain a file-relay service that can be used to access the user’s address book, photos, voicemail and any accounts configured on the device.

However, Apple has denied the claims the backdoor was created deliberately for government or surveillance purposes.