Wait, What?! Macs get viruses?! YES! If your Mac is running funny and doing weird things, it’s time to check it for viruses, spyware and adware.
Here is a handy guide to removing spyware and adware from your Mac:
https://malwaretips.com/blogs/remove-mac-os-x-virus/
Next you are going to want to make sure you have an awesome Mac antivirus AND that it is updated. I recommend Bitdefender, which is fast, effective and has a low impact on your system’s performance.
Here is a great review of Mac Antivirus programs for 2016:
http://www.tomsguide.com/us/best-antivirus,review-2588-6.html
Using these tools your Mac should be healthy, happy and virus-free!!