Earlier this week, a colleague was contacted by their provider about their IP. Apparently that IP was breaking the Acceptable Use Policy - by distributing a virus/Trojan/spyware! He was running AVG, a very commonly used antivirus software, and he’s a pretty high level computer user, and yet he was still infected! Without actively monitoring his system, he was infected. This is one of the reasons I strongly recommend managed hosting if you don’t have a server administrator on staff. While that may be an option for your server, personal computers can open up holes into your bank accounts, credit cards, and identity in general, even if your an advanced user. PC World had an article on 17 High-Risk Security Threats (and how to fix them), with topics like online passwords, cellphones, and your browser. If nothing else, definitely make sure to download and install your important updates.