Flawed Apple Mac firmware updates may leave them vulnerable to attack

Researchers have found ​the pre-boot Extensible​ ​Firmware​ ​Interface​ ​(EFI)​​in​ ​many​ ​popular​ ​Macs​ ​is​ ​not always​ ​receiving​​ ​security​ ​updates​ as expected.