https://motherboard.vice.com/en_us/article/vbxxxd/unlock-iphone-ios11-graykey-grayshift-police https://blog.malwarebytes.com/security-world/2018/03/graykey-iphone-unlocker-poses-serious-security-concerns/ https://www.apple.com/business/docs/iOS_Security_Guide.pdf
https://news.ycombinator.com/item?id=16604204 https://tech.slashdot.org/story/18/04/12/1851203/some-android-device-makers-are-lying-about-security-patch-updates https://source.android.com/security/
