Apple has confirmed plans to tighten security in iOS 12 to block the use of external hacking devices such as Grayshift’s GrayKey box by locking down the Lightning port on iOS devices, Reuters reports. A feature recently discovered in iOS 11.4 was designed to prevent the Lightning port from accepting USB device connections when nothing had been connected in seven days, and after the first iOS 12 beta came out, it was discovered that the feature…