It used to be that a link was a simple thing that just took you to another website. Nowadays, you can never be sure where a link is taking you - spammers send messages that look as if they're taking you to your bank, but actually they take you to the spammer's website where your bank details can be stolen and your account emptied for you.
Having had my computer compromised years ago by an apparently innocent link on a website, I have belt-and-braces security. Dodgy links are flagged with a red mark to show I shouldn't go there. All links on PPRuNe get the red card from my PC these days, even ones posted by Tony Draper.
The quickest/easiest fix is to use WOT (Google it; a link in here won't go there) as well as a full-service anti-virus and NoScript. That's still not 100%, but it's better.
If you want to stop any "browser grabber", then you need to do what cattletruck says. In your C:\Windows\System32\drivers\etc folder there should be a file called simply "hosts". It tells your computer not to visit certain sites.
Find the address of the offending "grabber" - the bit after the http:// - and put it into your hosts file preceded by 127.0.0.1 - something like this:
127.0.0.1 somewhere.naughty.com
Last edited by Keef; 15th November 2013 at 23:17.
Reason: Smiley screwing up file reference.