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Delivering services online is important in e-health. Services that are delivered through online communications between engaging parties, often involve sensitive information transmitted over the Internet. However, while the Internet successfully facilitates these services, significant threats also come in parallel. Network attacks, information breaches and malicious software on a computer system are common threats to the Internet. These threats can cause severe damage to computer systems and also the information. As the authors study current security technologies particularly that provide security to online communications, they found out that these technologies do not cater for different kinds of security needs because of the rigid way the security mechanisms are constructed.
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