Mac Firmware Updates Are Failing and Leaving Systems Vulnerable: Report

There is a discrepancy between the frequency and thoroughness of Apple’s Mac Operating System (OS X) and app security updates, and updates for the underlying firmware (EFI) on Mac computers. Researchers have found that on a sample of 73,324 Macs deployed in production settings, 4.2% are running outdated EFI — leaving them potentially vulnerable to new exploits.