I 've opened three threads today where the member is upset because they are getting an Alert that a site is known to contain fraudulent material, has a bad reputation or has malware and won't load. This is NOT a redirection. It can come from your security program or browser. (Firefox has a built-in warning that gives the message and prevents the site from loading, Malwarebytes on a system are also doing this warning) Investigating the IPs for the sites readily indicated what a Domain is and how it's used. Put in easy to understand language, A redirect takes you to a site you didn't ask for- either you selected the site from the search engine and were taken to a different site, you types a URL in the Address Bar but were taken to a different, unrelated site. The sites you are redirected to, frequently show a lot of ads tempting you to click on one. Most, if not all of the malware we are seeing interferes with the search feature. If doesn't matter if it's Google or Yahoo. this is not a Google virus- it just happens that most people use Google. NOTE: the comments above describe a totally different situation than when you get a pop-up saying the system is infected and you should click on something to remove it. This isn't a block or a redirect- it's rogue software. So: Block: when a security program warns and prevents loading of a site. Redirect: when you get something other than the site you requested or clicked on. Pop-ups warning of infection: rogue antimalware programs. Know what your antivirus/antimalware program icon looks like. Appreciate it when it displays. Make your searches as specific as possible. For instance, if you want information on how to replace your hard drive, don't use 'computer' as the search term. Instead use a string like 'replace hard drive on dell computer.