Heh. but how long will it take her to discover MacKeeper?
Out of interest... my daughter got a shiny Zenbook for uni a couple of weeks ago. Came with a one year McAfee sub, which I probably foolishly uninstalled and left it all to Defender.
She's a sensible girl (an aspiring accountant!?!) and is 'aware' of security issues, but is there a must-have, non-intrusive, free third party malware / virus / etc prophylactic she should install?
I think that's a great call. Defender and a little common sense is all that's needed. You can always use virustotal if your unsure of a particular file.