I also find interesting the fact that Google is offering money to hackers (as prizes) to discover Chrome vulnerabilities. It's a smart tactic and pays off in the long run. If the other "hacked manufacturers" would do the same the Internet would be a much safer place.
My SGS4 had the GE version of the OS, which had been on 4.3 for a long time and will get the 4.4 by the end of the year. No Samsung bloat on it. Of course, it would be nice to see which specific apps were vulnerable, because there is a way to disable these on a phone, even a non-rooted phone.
I always read the permissions required when installing apps, and if something sounds fishy I never allow it to proceed. I've been using Android since the glorious days of Cupcake and never had any malware on any of my phones (TBH, I have never seen personally an infected Android phone, despite the apocalyptic previsions of this or that "expert").