Dregol.com by ClientConnect LTD and is adware and browser search hijacker that installs in Google Chrome, Mozilla Firefox and Internet Explorer. Dregol.com replaces search, newtab and homepage settings of all installed browsers to http://www.dregol.com. Sometimes browsers shortcuts can be hijacked as well.
Buzzdock by Alactro LLC is adware program for Windows platform. Originally developed to enhance user search experience, Buzzdock instead starts display extra advertising inserting its ads into Google search result page in Google Chrome, Mozilla Firefox and Internet Explorer. It creates extensions for those browsers.
BlockAndSurf by Revizer Technologies is unwanted browser extension that injects ads in browser windows. It affects Google Chrome, Mozilla Firefox and Internet Explorer. After installation it will start insert ads on different websites and inside search engine results. Clicking on this ads can harm your PC, as they advertise third rate products.