As I have stated over and over the cloud is NOT secure.  It never will be and never can be.  the highly centralized nature of the various cloud services means you do NOT want to put anything critical on the cloud.  You can go to my cloud section of my blog as I start at the foundations and go up the stack from there.  If you foundations are not solid the rest is just waiting to fall down. If you have Gotomypc or Teamviewer on your system change your passwords on both.  Teamviewer sears they weren’t hacked but the anecdotal evidence I have seen says they were.  Gotomypc at least admits they were hacked.