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