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Information Security Tips Series |
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What is "cloud
computing"?
You've come across the term "Cloud computing". What does it mean and why is such a name being used? Cloud computing refers to Internet-based computing. As the cloud symbol is traditionally used by computer engineers to represent "the network" in computer diagrams, hence the term "Cloud Computing". Operation of cloud computing is similar to operation of a virtual server. It links different computer systems into a large-scale resource bank for processing, sharing and exchanging information. E-mail services such as Hotmail and Yahoo are examples of cloud computing applications in early days. The popular social networking website - Facebook, the photo sharing site - Flickr, Google Calendar and even Gmail are some other examples of cloud computing applications. While using these applications, users do not have to concern about the actual physical location for data processing, sorting or even storing. All operations are conducted virtually via the "cloud". How good is it?
As cloud computing is based on the Internet infrastructure, hardware requirement on user side is rather low. That's why users can turn their homes, a public library, or café into their 24-hour office, as long as there is Internet access. In order to encourage more users to store and share data on their platform, cloud computing service providers offer hassle-free services. They will look after system security and management in addition to flexible and efficient services. A typical example is Google Docs. To use Google Docs, users can simply log onto its website and edit their documents without the need to even install Microsoft Office, thus saving the cost of buying the software. Is Cloud Computing safe?
Cloud computing is similar to outsourcing your information system architecture to a third party. In terms of information security, this kind of outsourcing inevitably could increase the risk of information leakage. When users use cloud service, their behaviour, habits, preferences and privacy are all captured by service providers. The recorded information may possibly be used for other commercial purposes. Besides that, users should also be aware that the serviceability of cloud service heavily relies on the stability of the provider's network infrastructure. Unstable network speed, frequent disconnection or delay may generate unexpected inconvenience and distress to users whenever they are in need of the service or the data. Cloud computing can provide an unlimited service free of charge. However, no service provider can guarantee a lifelong service to users. Commercial activities, such as business liquidation, acquisition or merger, affect existing service and data retention. The data stored with the previous service provider may not be obtainable or transferable under such business change. Prior to using cloud service, users should seriously assess the risk of data loss and all other possible consequences. Future Trend
We have no doubt cloud computing technology is an up and coming computing trend. Regardless of how the technology develops, users should always take measures to protect their information, assess any risk of data leakage, and comply with Government and Force orders on information security. |
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