Information encryption is a technology that uses mathematical or physical means to protect electronic information from leakage during transmission and storage. In the traditional postal system, senders use envelopes to hide their contents, which is the most basic security technology, while in e-commerce, tangible envelopes are no longer their representative's choice.

In order to realize the confidentiality of electronic information, it is necessary to realize that the information is unreadable to anyone except the specific receiver. In order to ensure the information security of trading partners who enjoy design specifications, certain measures must be taken to hide information, and the most effective means to hide information is encryption. Encryption in communication is mainly based on password. In digital communication, computers can use encryption to change the digital structure of load information, and computer information protection is mainly based on software encryption.

The working principle of network eavesdropping attack

In network eavesdropping attacks, hackers will look for weak connections between clients and servers: check those unencrypted devices or not the latest software, and install malicious software connections through social engineering. By making use of these connections, hackers can intercept data packets passing through the network. Without encryption, any network, webpage or email traffic may be read by hackers.

Many times, hackers will install sniffer programs, and security teams often use these legitimate applications to monitor and analyze network traffic to detect problems and vulnerabilities. But these applications may also be used by bad elements to find the same vulnerabilities and exploit them.