what does installd do in privacy setting?

Solution 1:

I've had this question as well and finally went digging. This information is stored in the OS X Privacy database. This db can be accessed with the command-line tool tccutil, but the only ("supported") option is reset. That is of course not very useful here. I found someone at this page who wrote a short python utility to edit this database. Examining the code, the db is located at /Library/Application Support/com.apple.TCC/TCC.db (you will need sudo access for this). It is a SQLite db. There are entries in there for /System/Library/PrivateFrameworks/PackageKit.framework/Resources/installd which is almost certainly the installd referenced in the preference pane. This is the daemon which occasionally checks for software updates. Since it is Apple code, I am inclined to trust it.