The issues which Frisk reported were addressed by Apple in macOS 10.12.2 patch released on Tuesday, December 13.
The solution Apple decided upon and rolled out is a complete one.
At least to the extent that I have been able to confirm, Frisk said.
It is no longer possible to access memory prior to macOS boot.
The Mac is now one of the most secure platforms with regards to this specific attack vector.
Source:bleepingcomputer
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source: www.techworm.net
