MixBuilder is potentially unwanted application (PUA), that comes in form of extension for Safari, Google Chrome and Mozilla Firefox browsers on Mac systems. App is classified as adware, because it displays pop-up ads and unwanted advertisements, that does not belong to the sites you are browsing. Such MixBuilder advertisements may look differently: boxes with coupons, underlined words (in-text ads), pop-up ads or banners. Also, MixBuilder can modify search engine and homepage settings, which can result in search redirects to doubtful websites. As add-on, MixBuilder gets permissions to access your browser history and, what is more dangerous, sensitive information from webpages including passwords, phone numbers and credit cards.