From a recent article:
<<NetworkWorld is reporting that Apple has disabled or removed the Jailbreak Detection API in iOS 4.2.1, which was used by apps to detect if the user's iDevice was jailbroken. 1
Network World reports that the API, which was released in June as part of a mobile device management (MDM) bundle for iOS 4.0, has been disabled in iOS 4.2, leaving perplexed vendors to question why. The API had previously allowed third-party MDM applications, such as AirWatch or Sybase's Afaria, to check for unauthorized modifications to the system files, author John Cox wrote. 2
Jailbreak exploits typically change a number of operating system files, and exploit one or another low-level OS features to let users directly load their own or third-party applications. 3
<<NetworkWorld is reporting that Apple has disabled or removed the Jailbreak Detection API in iOS 4.2.1, which was used by apps to detect if the user's iDevice was jailbroken. 1
Network World reports that the API, which was released in June as part of a mobile device management (MDM) bundle for iOS 4.0, has been disabled in iOS 4.2, leaving perplexed vendors to question why. The API had previously allowed third-party MDM applications, such as AirWatch or Sybase's Afaria, to check for unauthorized modifications to the system files, author John Cox wrote. 2
Jailbreak exploits typically change a number of operating system files, and exploit one or another low-level OS features to let users directly load their own or third-party applications. 3