I have decided to not use a real time antivirus as I don't like the resource usage. But I would like to be able to have a program to block malicious url's/IP addresses that stays up to date. I'm not 100% sure I need such a program to scan web pages in real time, so maybe one that updates blacklisted sites often would fit my needs. I have tried WOT and it's ok although I have some doubts about it being updated quickly. I've tried the AVG link scanner and it's ok but my web browsing takes a hit because all the links seem to be scanned real time, same issue with the web scanner by Bitdefender. I hear Panda has a nice one that can be installed separately but have not tried it. Is there a web filter that blocks black listed url's and IP addresses which is updated regularly (such as hourly or several times a day)? Or would a host file or DNS service be better for my needs? Or maybe a firewall that updates a black list regularly? I use Ad Muncher but it does not reliably block malicious sites. I also use Chrome with scripting disabled but that is white list based and I'm not sure how effective it is if a white listed site is hacked. Any suggestions?