First with AirDrop, then Continuity and Handoff, and now Universal Control, Apple's ubiquitous use of Bluetooth LE and Wi-Fi direct connections to devices shari

First with AirDrop, then Continuity and Handoff, and now Universal Control, Apple's ubiquitous use of Bluetooth LE and Wi-Fi direct connections to devices sharing the same iCloud account makes me wonder how exactly does Apple secure all these over the air connections. Once hacked, an attacker presumably nearby can intercept phone calls and text messages, look what's in the clipboard, what website you've been browsing, where you've been, and now even what you are typing, all done remotely without the victim even noticing. I know there's an Apple Platform Security document, but that thing reads like marketing material rather than actually explaining what actually goes on under the hood. Has there been any serious attempts at breaking these things I wonder?