For the last few months I’ve been using the beta of Microsoft Security Essentials, Microsoft’s own free anti-virus and anti-spyware program for Windows 7, Vista and XP. It’s now out and available for everyone to download and use. It’s hard to know if you can recommend anti-virus programmes – it’s not as if I run into many viruses (although on some of the darker sites I visit (security people, not porn)) I do occasionally see an attempt to drop spyware or adware, usually through Adobe Acrobat (thanks for that Adobe). In the last three months Security Essentials has caught...