If you get ads, popups, notifications from BrowserProcess, your Mac is infected with adware. BrowserProcess is adware for Mac.
BrowserProcess changes setting on your Mac. First, BrowserProcess installs a browser extension in your browser. Then, after BrowserProcess hijacks your browser, it modifies the settings in the browser. For example, it changes the default home page, modifies search results, and displays unwanted pop-ups in your browser.