For the late 2012 Apple Mac Mini, You do not need the security version of either the T6 nor the T8. However, I use the iFixit Pro Tech Tool Kit so mine are security torx. Either will work in this case. Goodluck!
(I’ve taken apart plenty of Apple products as well as 3 mac mini’s this week alone 2011, 2012, and 2012. They start using Safety Torx in 2014 to keep “clumsy customers” out. However that does not keep out the enthusiasts ;)