what are the characteristics of computer virus ?
please help I do hlw
Answers
Answer:
So, what is a computer virus – simply put, a computer virus is a malicious code that can copy itself and infect a computer without the approval or knowledge of a user. A computer Virus has two major characteristics, the ability to replicate itself and the ability to attach itself to another computer file.
Explanation:
A computer virus is a program made by hackers in order to multiply insidiously and fast to other computers in the network. It disrupts more or less badly the operation of the infected computer. It can extend through any means of digital data exchange such as the Internet (Emails, attachments, insecure websites, links).
General characteristics of computer viruses
1. The virus can infect many records of infected computer (and the network to which it belongs because some virus residing in the memory as soon as a diskette or program is loaded into the same, the virus is “very” or “adheres” to the memory itself and then to infect any file on the computer that had access.
2. Can be Polymorphic: Some viruses have the ability to modify your code, which means that a virus may have multiple similar variations, making them difficult to detect.
3. They may be resident in memory or not: As mentioned earlier, a virus is capable of being a resident, that is first loaded into memory and then infects the computer. It can also be “non-resident when the virus code is executed only every time a file is opened.
4. Can be furtive: stealthy viruses (stealth) first attach themselves to files on the computer and then attack the computer, this causes the virus to spread more quickly.
5. The virus can bring other viruses: A virus can lead to another virus making it much more lethal and help each other to hide or even assist you to infect a particular section of the computer.
6. You can make the system never shows signs of infection: Some viruses can hide the changes they make, making it much more difficult for the virus is detected.
Hard disk is formatted
7. They can stay on the computer even if the hard disk is formatted: Although very few cases, some viruses have the ability to infect different parts of the computer.