You might also want to run the latest version of Safari because it has new features. The latest version of Safari might then fix those security issues, as well as resolving other bugs. On top of that, Apple security experts regularly discover loopholes that can be exploited by cybercriminals. And there’s a good reason for that: over time, software incompatibilities inevitably arise. No matter how fast and enjoyable Safari is, Apple always tries to streamline it.