In documents written by Apple on the main methods that the company uses to ensure the safety devices against malware. For example, in the leadership marked the built-in iOS encryption technology, subscription applications of digital certificates, use the online store App Store, etc.
In general, all the principles of safety are described on page 20. The information includes details of the company, as well as the opinions of independent researchers.
The document says,
Apple strives to implement proven methods of encryption and create a modern, focused on the use of mobile technology to ensure privacy and security, to iOS-devices could be used with confidence in any private or corporate environment.