题目内容
Some ways to protect e-commerce security and information security include __________.
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E-businesses can be divided into the following categories: __________ (B2C), __________ (B2E), __________ (B2G) and so on.
The most commonly used e-business models include: __________(电子采购), E-malls, __________(电子拍卖), __________ __________(虚拟社区), Value-chain Integrators（价值链集成商）.
__________(黑客) are one of the great threats to the security of e-businesses.
A business model is defined as the organization of product, service and information flows, and the source of revenues and benefits for suppliers and customers.
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