What are the security issues faced during the transmission of information?

The following security issues exist during the transfer of information and files:

Link risk at the data link layer. It is difficult to ensure that data is not illegally stolen or tampered with during transmission. Intruders install eavesdropping devices on transmission lines to monitor network data flows, intercept sensitive information to cause leaks, or tamper with data integrity.

Security risks of the network system. Intruders probe and scan security vulnerabilities in networks and operating systems, and use corresponding attack methods to launch attacks on the network.

Security risks to the system. There are many security vulnerabilities in the current operating system and application system, which is a huge security risk.

Security risks to your application. Resource sharing may lead to the leakage of important information.

Manage security risks. Lack of effective management measures, such as identity authentication and permission authentication, will inevitably lead to security risks. File transfer also needs to pay attention to the above security issues, file transfer system domestic mainstream manufacturers Raysync transfer in the security of the strategy is relatively complete.

1. Interception and eavesdropping;

2. Interference and tampering;

3. Abnormal interruption.

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The common ways in which data transmission is secure are as follows:

1. U disk hard disk. This is the most traditional way of transmission, its advantage is that enterprises do not need to invest in other construction costs, but the disadvantages are also obvious, the use of U disk hard disk copy, in fact, can not monitor and manage this behavior process, and secondly, if the file involved is larger, the frequency of exchange is low, then it is still necessary to be responsible for the transmission, and because this process does not have antivirus, content detection and other links, so it has a greater security risk.

2. FTP transmission. The use of FTP for cross-network file transfer is generally in the form of dual network cards, which can transmit large files and meet the requirements of transmission efficiency to a certain extent, but the dual network cards actually destroy the company's original network isolation and have potential security risks. Moreover, FTP needs to be maintained by dedicated O&M personnel, which also has a certain personnel cost.

3. The ferry function of the net gate comes in. The ferry function that comes with the network gate can realize the one-way transmission of files without destroying the original network isolation, but this can only meet the one-way file exchange, and there is no approval, logging and other functions, so it is slightly weak in enterprise security management.

4. Enterprise network disk. Enterprise network disk can realize the needs of file ferry, but because the network disk itself does not have the ability to transmit across the network, so after purchasing the network disk, it is also necessary to carry out the construction of cross-network exchange.

5. VPN encrypted transmission. Data encryption is recognized as the only practical way to protect the security of data transmission and an effective way to protect the security of stored data, and it is the most important line of defense in data protection technology. Data encryption technology is the most basic security technology, known as the core of information security, and was originally mainly used to ensure the confidentiality and sensitivity of data in the process of storage and transmission.

The security of information transmission is mainly ensured by the following means:

Encryption technology: Encryption technology can convert plaintext information into ciphertext information to ensure that the information is not stolen, tampered with or forged during transmission. Commonly used encryption techniques include symmetric and asymmetric encryption.

Authentication technology: Identity authentication technology can verify the identities of the sender and receiver of information to prevent identity impersonation and malicious attacks. Commonly used identity authentication technologies include password authentication, digital certificate authentication, biometric authentication, etc.

Digital signature technology: Digital signature technology can ensure the integrity and authenticity of information and prevent information from being tampered with. Digital signature technology is a digital signature algorithm based on asymmetric encryption technology, and commonly used digital signature algorithms include RSA, DSA, ECDSA, etc.

Secure Transport Protocol: A secure transport protocol is a protocol that provides secure transport services between the application layer and the transport layer, such as HTTPS protocol and SSL TLS protocol. The security and reliability of information during transmission can be ensured through secure transmission protocols.

Firewall and intrusion detection system: The fireproof car wall and intrusion detection system is a security device that can monitor and filter network traffic, prevent unauthorized access and malicious attacks, and ensure the security of information transmission.

To sum up, encryption technology, authentication technology, digital signature technology, secure transmission protocol and security equipment are mainly used to ensure the security of information transmission, and the comprehensive use of these technologies and means can effectively improve the security and reliability of information transmission.

In order to ensure the security of network information transmission, it is necessary to prevent the following five problems.

1) Interception. For information transmitted over the Internet, attackers only need to use physical or logical means on the transmission link of the network to illegally intercept and intercept the data, and then obtain sensitive information that can be incorporated into the user or service party.

2) Forgery. However, the password used for user identity authentication is often transmitted on the network in clear text when logging in, which is easily intercepted by attackers on the network, and then the user's identity can be counterfeited and the identity authentication mechanism can be breached. The password for identity authentication above 90 is transmitted in the form of **.

3) Tampering. It is possible for an attacker to intercept information on the network and modify its content (add, truncate, or rewrite) so that users cannot obtain accurate and useful information or fall into the trap of attackers.

4) Interruption. Attackers use various methods to interrupt the normal communication of users to achieve their own goals.

5) Reissue. Repeat attacks are in which an attacker intercepts ciphertext information on the network and does not decipher it, but sends these packets again to the relevant server (such as a bank's transaction server) to achieve malicious purposes.

Answer]: C message authentication is to verify the integrity of the message, knowing that when the receiver receives the sender's message, the receiver can verify that the received message is true and has not been tampered with.