But cloud computing can be dangerous because hackers can get into the cloud and look at your personal things. If they do get in its essentially a gold mine for them, and millions of peoples data could be shared around the world. But it is very rare, and does not happen very often.
“Cloud computing is the on-demand availability of computer system resources, especially data storage and computing power, without direct active management by the user. The term is generally used to describe data centers available to many users over the Internet”
