In the process of e-commerce, a lot of business activities are realized through Internet, Extranet or Intranet. Business information such as payment information, order information, negotiation information and confidential business correspondence files in business activities are all stored in the computer system, transmitted and processed through the network. At the same time, the theft, tampering and destruction of business information caused by computers and computer viruses, as well as information errors or failures caused by machine failures, program errors, misoperation and transmission errors, all seriously endanger the security of e-commerce systems. In particular, e-commerce activities based on the Internet have put forward unprecedented requirements for secure communication. Therefore, security is the key to the healthy development of e-commerce, the core issue in e-commerce operation, and the guarantee for the smooth progress of e-commerce. E-commerce security includes effectively ensuring the security of communication networks and information systems, and ensuring the authenticity, confidentiality, integrity, non-repudiation and invariance of information.

The main contents of e-commerce security research involve the architecture of secure e-commerce, modern cryptography, digital signature technology, identity and information authentication technology, firewall technology, virtual private network, Web security protocol, secure e-mail system, virus prevention technology, network intrusion detection method, certificate management, public key infrastructure, digital watermarking technology, digital copyright protection technology, secure e-commerce payment mechanism, secure e-commerce transaction protocol, online e-banking system and transaction system security.