The goal is to track when kexts are installed and determine whence kexts came. For instance TRIM is disabled for 3rd party drives in OS X Yosemite. To use a utility like Trim Enabler one must disable kext signing globally. WRT to http://www.cindori.org/trim-enabler-and-yosemite/ – specifically:

“It is important to note that the kext-signing setting is global, if you disable it you should be careful to only install system drivers from sources that you trust.”

It occurs this would be a manageable security issue if one can track kext installed when kext signing is turned off. However, 1/ I don’t know how to discern whether/when kexts are being installed, or 2/ who wrote the kexts already in /System/Library/Extensions/ from before, or 3/ if I miss an alert, how to determine after the fact.

1/ Is there some way to get an alert, warning when a kext is being installed? 2/ Is there some way to determine which program installed the kexts already there?

  • I devised a method using an app called Hazel that logs changes and posts alerts when changes happen in designated folders. This isn't a good solution because alerts are transient, so easy to miss, and logs aren't easily searchable. – thepen Jul 14 '15 at 3:17

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