Top 10 types of network security threats

Source: Internet
Author: User

Types of Network Security Threats
Network threat is a potential use of network security defects. These defects may cause unauthorized access, information leakage, resource depletion, and theft or destruction. The threats to network security come from many aspects and change with time. There are several types of network security threats.
(1) eavesdropping. In a broadcast network system, each node can read data transmitted on the Internet, such as eavesdropping, installing a communication monitor, and reading information on the Internet. The network architecture allows the monitor to accept all data frames transmitted over the Internet without considering the transmission destination address of the frame. This feature makes it easy and difficult to eavesdrop on online data or unauthorized access.
(2) counterfeiting. A counterfeit occurs when an entity impersonates another entity for network activity.
(3) replay. Repeat a packet or part of the packet to produce an authorization effect.
(4) traffic analysis. Through observation and analysis of online information flows, we can infer useful information for online transmission, such as whether there is any transmission, the quantity, direction, and frequency of transmission. Because the message information cannot be encrypted, effective traffic analysis can be performed even if the data is encrypted.
(5) Data Integrity destruction. Intentionally or unintentionally modify or damage the information system, or modify the data in an unauthorized or unsupervised manner.
(6) Denial of Service. A Denial-of-Service occurs when an authorized entity cannot obtain its due access to network resources or the delay in urgent operations.
(7) Unauthorized use of resources. And usage inconsistent with the defined security policy.
(8) traps and Trojans. By replacing the legal program of the system, or inserting malicious code into the legal program, the unauthorized process can be achieved for a specific purpose.
(9) virus. With the increasing dependence on computer systems and networks, computer viruses have posed a serious threat to computer systems and networks.
(10) slander. The extensive interconnectivity and anonymity of the computer information system are used for walking wrong messages to slander the image and popularity of an object.

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