Montiera Toolbar is classified as a potentially unwanted application which affects target computer by injecting its malicious codes into browser such as IE, Firefox and Chrome. It infiltrates your computer without any permission or consent. Once inside, Montiera will modify the default homepage settings and show numerous pop-up ads during online browsing to lure you to pay for its creators for increasing the page-visiting. Moreover, if you carelessly click on the sponsored links, you might be redirected to some unwanted websites that may contain other sorts of malware or spyware. Gradually the compromised machine will decline in pc performance and internet speed as the virus is able to consume a large amount of system resource.