Information
The Safari configuration provides a repository to store information, including website username and password details, that can be to support Safari Auto Fill capability. Saved password information is stored in the device keychain and/or iCloud keychain. The Safari configuration interface requires the input of the device passcode prior to granting access to stored website password details; website and user name details can be viewed without the additional passcode prompt.
Solution
From the MobileIron console, open the Policies and Configs -> iOS and OSX view. Under the Restrictions Policy verify that Enable autofill is not checked.
NOTE: This item will only be configurable if Allow use of Safari is enabled.