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