cloud computing

Cloud computing to me is as familiar as my bed. I've found it to be a rapid way of transferring and holding information for work and collaborating with co-workers and other users connected to our cloud. I haven't seen a reason to worry about security so far with it as for prime access, we have a 2 step security system in which upon log in, I'm prompted for a security code that is valid for 30 seconds, that is auto generated and sent to my phone. So someone would need my log in, password, and phone in order to gain access.