

So, most likely, you’ve downloaded a file/program from a less-than-legit source. True, browser-specific exploits can be a threat, but if the OS is running the latest updates, you should be OK.

The App Store is impenetrable, and the chances of being infected by an app that you downloaded from there are next to none.

Is your system running slower than it should? Do you see suspicious pop-ups (with ads) all over the place? Chances are you’re dealing with Mac-exclusive malware that has planted itself deep into the OS. The virus installs itself, damages the software, and then continues to spread through the system. A virus is a stand-alone program that is installed against the will of a user on the device.
