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