Hi EJB It is very easy to have a security system or systems put on your computer. I run a Accounting/Tax/Finance/Management consulting business,plus advise clients in various parts of the world.(We have over 200 clients).Our computers are linked to each other both on and off site and we have never had a problem. This is due to having a top rate security system for all our computers which is updated on a regular basis, by a top rate service supplier. Maybe you should come down here and see how we do it? The sun shines most days.