How does a computer virus affect process management
1. term: A computer virus (lat. virus: Poison) is a self-propagating computer disruptive program that infiltrates other programs in an uncontrolled manner, reproduces itself, i.e. creates copies of itself, and then implants (infects) these into the existing program as soon as it is run This causes the virus to get onto other data carriers, such as network drives and removable media such as USB sticks. The expression is also used colloquially for worms and Trojans, as there are often mixed forms and the difference is hardly noticeable for users. Viruses and worms spread on computer systems, but they are partly based on different concepts and techniques. A virus is a hacking technique and is classified as malware.
2. functionality: Like its biological role model, a virus uses the resources of its host. It also usually multiplies in an uncontrolled manner. Through malicious functions built into the virus author or through errors in the virus, the virus can affect the host system or its programs in various ways, including loss of data. As a result of the action of the user who connects an infected removable medium to another system or starts an infected file, the virus code is also executed there, which infects other systems. Viruses, unlike worms, need the host to execute their machine code. Without independent spreading routines, viruses can only be spread through an infected host program. When this host program is called, the virus is executed. Once started, it can make changes to the status of the hardware (e.g. network connections), the operating system or the software that are not controllable by the user. Computer viruses can impair the security of the computer through functions desired or not desired by the inventor.
3. "Old iron": Today viruses have been almost completely displaced by worms, since almost every computer is connected to the Internet or local networks; the active spreading strategy of a worm enables it to spread widely in a short period of time.
4. Damage: The economic damage caused by viruses is less than the damage caused by computer worms. The reason for this is that viruses can only spread very slowly and are therefore often only spread locally. Another reason is the fact that they generally damage the attacked computer or file. need for a longer period of time to be able to spread effectively. Viruses that destroy data instantly are very ineffective because it also destroys their own living space.
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