After you've viewed Jim Hamm's alert (just below) go to this other article at How To Geek (Mac OS X isn’t safe anymore. The crapware/malware epidemic has begun). See illustrated examples of screens that are “like the Old Faithful of bundled crapware.” Examples show Yahoo, CNET downloads, OpenOffice, fake Java messages, MacKeeper, etc. It discusses the plist file, and says to restrict Apps that aren’t from the App store.
How to Remove Malware & Adware From Your Mac
From the How-To Geek website Jim Hamm finds some helpful info on viruses, worms, and Trojans, along with adware, crapware, and spyware programs. The writer outlines the problems and the possibilities. He also warns, “Don’t have the Java plug-in enabled, either . . . “ This article was published 7-25-15.
Malware / Adware / Crapware
With the bold statement, "Mac OS X isn't safe anymore" this article dated 2-26-15 has 16 pages of details and pictures. http://www.howtogeek.com/210589/mac-os-x-isn’t-safe-anymore-the-crapware-malware-epidemic-has-begun/
Your personal information, bank and credit card numbers, where you are and what you're doing is open to view. How did this happen? What can I do? What downloads are safe?
This article has 37 replies posted which gives you an idea of what others are thinking about the troubles that many have not considered. This website also has sections on Windows, Linux, Office, Apple, Mobile, Gadgets, and more.