Researchers at the FireEye security laboratory have identified a “zero day” exploit in PDFs which when opened in Adobe’s Reader can do malicious things. Once the PDF is opened in Adobe Reader it deletes a couple of key files on Windows machines (DLLs) and installs a couple of it’s own. Once those files are installed your computer connects to a remote computer and you have now become vulnerable to all types of malice.
If you are a retailer the longer you can keep people in your store (on your site) the more likely you are, to a point, to upsell or sell add-ons. Of course there is a point at which they are no longer buying and are simply hanging out but that is beyond the scope of this short article. To define “time on site” let’s use the simplest of definitions: the number of minutes or seconds a visitor keeps your site open in their browser in a single visit. Fair enough?