OP
Mr Curnow
Windows is targeted too much and is too vulnerable to be capable of security, even though you have anti-virus software, cyber-criminals know how to work their way around this, AVG is decent for windows, however if you want to keep your sensitive data secure use a linux based operating system, i'm currently using linux mint and it is great, much more secure than windows. Windows has many vulnerabilites waiting for people to exploit, linux operating systems are being constantly updated so they can remain secure.