For all kinds of borrowing, Mac Thunderbolt interface can also be implanted into the virus

Could I borrow a removable hard drive? Borrow an external video card? Borrow the monitor? Later hackers may eliminate these problems for you.

Security researcher Computer Congress from Hamburg Chaos, Germany, successfully rewrote the computer firmware and implanted the virus through the MAC's Thunderbolt interface.

The researcher, named Trammel Hudson, said the attack would affect Apple's EFI boot, could not be detected in the system, and could not remove the virus by reloading the OS X system.

Thankfully, Apple has started to prepare patches for Mac Mini, IMac Retina and other devices, according to Trammel Hudson, but these patches can only solve some of the problems at this stage.

It is imperative that a timely fix be made before hackers can exploit the vulnerability on a large scale, since the attack will replace the original RSA key of the Apple device with the attacker's private key, preventing users from restoring the official firmware in a normal way. At the same time, the virus replicates itself to other devices connected to the MAC via Thunderbolt. To guard against the user, the virus keeps the infected device working properly.

It is rumored that the NSA will also use similar means to monitor objects in the device to bury the virus, through the hotel meeting rooms, such as public monitors can directly produce physical contact with the computer equipment spread.