Well, its a little complicated to explain, but only visiting safe websites is only a small part of computer security. There are lots of different network type connections that your computer is capable of using and web surfing uses only one of them. It depends on whether your computer is connected directly to your internet connection or is run through a firewall-router, whether you have firewall software, whether you have programs on your computer that have known vulnerabilities to network attacks, etc.
Will let my Bride look at this. Urdu to me. Can 'Firefox' take care of this? [Just heard that the WHOLE country of Estonia was taken down (or whatever it is called in computerese)].
Should I open an e-mail joke, from one of my whacko pals, with an attachment?
Yours truly,
Dumb-Dumb