MacKeeper

I don't trust it. I hear it is quite invasive and hard to remove, which is always a no-no for me.

Personally I'm not especially concerned about viruses, either on windows or on mac, because it's primarily stupid behaviour that allows them to inveigle themselves ("click on me, I'm harmless!" "ooo ok!").

The trouble my end is a 14 year old boy downloading games from sites i wouldn't go near with a barge pole, sometimes education gets shunted to the back seat with excitement.

All seems well tbf but wanted to do an anti viral, any suggestions?

Try ClamXav. It's donation ware (i.e if you like it make a donation) and it has an add-on called ClamXav Sentry which you can set to watch certain folders e.g. downloads.

Rob

ClamXav and Sophos appear to be the tools of choice for those who think it necessary, certainly. I personally do not, but when I have a fourteen year old son I may think differently (though not for games sites, I'll wager).

Worth a look? Mac360.com article: Free: Best Apps To Manage System Maintenance 

MacKeeper appears to be well worth avoiding. Most of the stuff that it does is already available in OSX or in other freeware packages.

This is a good review of it outlining why it just isn't worth the money or the hassle that it causes if you install and then try to remove it.

http://www.reedcorner.net/beware-mackeeper/

Rob

I tend to avoid any company that thinks pop up advertising is a worth while investment.

One of the great things about windows geek schadenfreude is if a successful OS X malware does make the rounds, plenty of people will delight in telling me as soon as it occurs.  Don't get that service on a windows box

Sophos Anti-Virus for Mac Home Edition - it's free. It's also useful if you run Windows and Mac computers on the same network since Windows viruses can pass to your Mac undetected and, whilst they'll have no affect on the Mac, they could possibly then infect your Windows machines.