For about a week now, I have noticed when I search in Google, the resulting links redirects me to ads and/or other search engines the first time I click them. I have read other forums on how to fix this problem and ran Malwarebytes, Spybot, Ad-Aware, and AVG in Windows Safe Mode all at separate times. The problem persisted. I downloaded CCleaner and after running it, the problem seemed to be fixed. Then I logged on my computer again today and went to Google and it started again! Is this a serious virus/adware/spyware? Can it be fixed? EDIT: Also from time to time, this message pops up: Your browser is under the threat of infection. Windows requires your permission to install online protection tool.Your browser is run in unsafe mode. Running the protection mode will help you to keep your computer safe. Staying at the suspicious website in unsafe mode may lead to the loss of personal data and computer breakage. To run the web browser in protected mode Windows requires installing the certified antivirus scanner software and online protection tool. Name: Online Protection Tool Publisher: Microsoft Windows It looks like a legit Windows warning, but I am afraid to allow it to install the protection tool because it may just be one of those false anti-virus softwares.