If you are getting notifications from DirectEnterprises, then your Mac is infected with adware. DirectEnterprises is adware for Mac.
DirectEnterprises changes setting in your Mac. First, DirectEnterprises installs a browser extension in your browser. Then, after DirectEnterprises 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.