While ever you are connected to the internet the is allways potential for a hacker. Simple as.
Blocking ports will deny access yes.
Lets give you all something to think about.
Web site stats.
I had my eyes opened a few years ago, it was made aware to me that screen size/res, operating system, IP addy, even www logging of where you had been and even where you went off to was possibe
Do you really think hackers cant get on to your machine .
Banks are hacked on a rgular basis, they darnt admit, but they end up taking on the conmen as security advisers.
Look at the hackers that gained access to the white house and the pentagon.
There are numerous back doors that have been known issues that are writen into windows.
Yes it's amazing what they show on Tv, one of the biggest issues thee days are people that dont secure thier wireless network down.
In fact there is even a forum member that has a utility in his signaure that tells you your own IP, remember Big Brother is watching.
Were you even aware all your emails get scanned ?
Scary, never mind spooky.