How do brokers ensure the security of online transactions?

Under normal circumstances, the online trading system of securities companies solves the security problem of online trading by means of firewall, data encryption and establishing secure electronic trading records from the aspects of security and data security. 1. Network system security In order to ensure the network security of the online trading system, protect the intranet from illegal users and prevent network attackers from attacking the trading network, securities companies usually use firewalls to establish a security gateway between the Internet and the intranet. The internal network of a securities company is isolated from the external Internet through a gateway, and the gateway server checks and identifies any information from the external network, filters out those malicious and harmful access information, and blocks attacks from the outside. 2. Data Communication Security When transmitting user data on the Internet, it is necessary to prevent user data from being stolen, tampered with and forged. Communication security mainly uses encryption technology, digital signature technology, time stamp and digital voucher technology to ensure the safe transmission of information on the Internet. The most commonly used technology is Secure Sockets Layer Protocol (SSL). In addition, the use of security authentication (CA) mechanism can further strengthen the identification of both parties to the transaction and prevent counterfeiting and denial. The password obtained by investors when they open an account in a securities company is the guarantee system for the security authentication of customers' identity by the computer trading system of the securities company. According to the regulations, the online trading system of securities companies must adopt all kinds of security technologies and products evaluated and approved by the National Cryptography Committee and the National Information Security Evaluation Center. 3. Preservation of electronic records In order to preserve the historical records for inquiry, the central computer room of some securities companies' online trading systems will record them electronically in several levels in the database every time they receive trading instructions or trading returns from customers, and the electronic records will not be allowed to be changed. For the record. According to China Securities Regulatory Commission's Interim Measures for the Administration of Online Securities Entrustment, the online entrustment system should have perfect means of system security, data backup and fault recovery. In terms of technology and management, it is necessary to ensure the safety, integrity and accuracy of customer transaction data. Customer transaction instruction data shall be kept for at least 15 years (long-term storage and one-time writing into electronic media are allowed).