sekkusu

The question is: If I log into other person's microsoft store account to download an app, this account gets added to the "Accounts used by other apps" category. Is that in any way dangerous? Like, is there a way for the owner of that other account to alter my windows settings or download other apps to my pc without me knowing? I also used my high school email to activate the office 365 stuff, can that be a problem? Thanks in advance.