This can be caused because of infections, when you surf and download from the web you can be open to infections, ad's, spyware and hackers, if your current suite isn't up to the job or you run no security at all you can easily be affected by malware and other infections from the web, when you spend your time logging in to banking and other ways to pay online it's best not to be vulnerable to these attacks, this suite updates every 2 hours automatically which can be set to every hour if required. We are Authorized Resellers of Bullguard Internet Security, this is one of the best, easiest and most intuitive suites to use. This is also used on all of our workstations and personal systems. Why risk having your personal information, money and your time taken from you. Built in features - Antivirus, Parental Controls, Firewall, Spamfilter, Safe Browsing site checker, PC Tune up, Game port forwarding detection and a Vulnerability scanner. Phew!