Cloud computing is very helpful. Many experts anticipate cloud service will lead post PC age. USB is less used and ,wherever and whenever, if we can access internet, we can use our materials.
However, there is a critical danger in cloud computing system.It is Hacking. Not long ago, KT, big telecommunications company, and NATE, big portal site, even Nonghub, big national bank, was hacked and it made outflow of information.
The more people use cloud service and save their data, the bigger the danger of it becomes. If your information is exposed to hackers, your documents can be deleted or copied. This problem can cause serious problem.
Plus, if the internet is not available, the person who rely on the cloud service can't any works. This is very critical limitation of cloud computing service. In this point of view, cloud computing still can't replace USB's function perfectly.
Lastly, it can bring monopoly of specific company. Today, cloud market is developing, so many services are cheap and easy to use it. However, the cloud industry is done by company not nation. Therefore, some day when people rely on their service very much, they can take measures to get more money.
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