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