Clicking these ads can result in opening dubious (potentially malicious) and deceptive web pages. In this case, they might open browser windows and reopen them even after they are closed. If installed, they usually feed users with coupons, banners, surveys, pop-ups (pop-up windows), and other intrusive ads. There are many adware-type apps on the internet, however, most operate in a similar manner. Furthermore, apps of this type usually display intrusive ads and collect browsing-related data. These are categorized as potentially unwanted apps (PUAs), which most users install unintentionally. This is a common problem and is usually caused by installed adware-type applications. In other cases, it reopens even when users force quit it, or it opens when users have just logged into the Mac. Many users experience a problem relating to the Safari browser whereby it repeatedly reopens. What is 'Safari Keeps Opening By Itself'?
How to remove 'Safari Keeps Opening By Itself' from Mac?