Bailey found iOS devices can be tricked into handing over private network keys to hacked devices that contain such chips. "If you hack a device with MFi, you can use that board to impersonate any host device you want that's enabled with Apple MFi," Bailey explained. "There's no way for an Apple iOS device to guarantee the MFi chip isn't being instrumented for malicious purposes... iOS will automatically provision security keys to the hacked MFi device. "You can impersonate an Apple device or accessory using an MFI chip ... and trick the security network into getting the security keys." That means it's possible to have an iOS device pass along cryptographic keys.

Source: Forbes April 26, 2018 12:00 UTC