Firewall technology: Firewall is the most important security technology developed in recent years. Its main function is to strengthen access control between networks and prevent external networks from entering internal networks.
Encryption technology: Data encryption is considered as the most reliable security form, which can fundamentally meet the requirements of information integrity and is an active security prevention strategy. Data encryption is to convert sensitive plaintext data into hard-to-identify ciphertext data according to a certain cryptographic algorithm;
DigitalSignature technology: Digital signature technology encrypts the abstract with the sender's private key and sends it to the receiver together with the original text. The receiver can only decrypt the encrypted digest with the sender's public key. In e-commerce system, digital signature technology plays a particularly important role, which is used for source authentication, integrity service and undeniable service of e-commerce security service.
Digital time stamp technology: Time is very important information in the documents of e-commerce transactions, and it is also the main content to prove the validity of documents.
The following security threats exist in e-commerce:
1. chop
Hacking attack refers to hackers illegally entering the network and illegally using network resources. With the development of Internet, hacker attacks often occur, which is hard to prevent. Hackers use any loopholes and defects on the Internet to modify web pages, illegally enter the host, steal information and other related harmful activities. In 2003, the Pentagon alone suffered 2.3 million attempted attacks on its network. Thus, hacker attacks have become an important security threat to computer networks in e-commerce.
2. The attack of computer virus
A virus is an infectious program that can destroy the normal operation of a computer system. With the development of Internet, viruses use the Internet, which greatly speeds up the spread of viruses. It invades the network and destroys resources, which has become another important security threat to computer networks in e-commerce.
3. Denial of service attack
Denial of service attack (DoS) is a destructive attack. It is an attack that users deliberately occupy a large number of network resources by some means, leaving the system with no remaining resources to provide services for other users. At present, representative denial-of-service attacks include SYNflood, ICMPflood, UDPflood and so on. With the development of Internet, denial of service attack has become an important threat to network security.