Study Says Some Macs Vulnerable to Exploits Even After Updates

An alarming number of Macs remain vulnerable to known exploits that completely undermine their security and are almost impossible to detect or fix even after receiving all security updates available from Apple, a comprehensive study has concluded. The exposure results from known vulnerabilities that remain in the Extensible Firmware Interface, or EFI, which is the software located on a computer motherboard that runs first when a Mac is turned on.