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a computer program taht replicate itself & infect copmuter for distructive purpose
definition of a computer virus definition of a computer virus
Their are many parts of a computer that viruses infect. Most viruses infect a certain file or program so that whenever that file is run, the virus is also executed. Some viruses called Master Boot Record viruses infect the Master Boot Record of your computer. The Master Boot Record is the partition of your computer first executed when you boot up your computer. When you turn on your computer, it runs all the programs inside the Master Boot Record partition and then passes control to other child processes. Viruses in this class infect the Master Boot Record so that whenever your turn on your computer, the viruses runs at startup too. These viruses are very tricky to find as they hide in a very deep part of your Operating System and manually deleting them could damage your computer.
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A computer worm is a type of malware that can self-replicate and spread independently without needing a host program. It can propagate through networks and use various attack vectors to infect multiple devices quickly.
Biological Virus can kill youComputer Virus can just kill your computer, not you.Neither is living.*computer virus it is software which corrupt the system *biological virus which cause decease in human body
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Bacteriophage
There are literally thousands of different viruses, but the most common ones are - Trojans, these are disguised as a different program, but when opened, they infect your computer - Worms, if your computer gets one of these, they replicate and embed themselves in various places on your computer, making it hard to get rid of
The infect your computer by being undetected by your anti virus and posing as a harmless file.
Viruses are malicious software (malware) in which their sole purpose is to replicate and infect non-infected computers. Their are many mediums to which a virus can infect a computer, most commonly through the internet and email attachments. When viruses infect a computer, it attaches itself to a "host" file (hence the name virus because it acts like a real world virus). Next, it injects its code into the host file so that whenever that infected file is run, the virus executes first and then the actual file starts. The "payload" is the official term to the effects a computer virus has on a PC.
It is difficult because viruses lack the ability to replicate themselves and theey lacks energy metabolism and other pathways that living things have. Viruses are totally depending on their host. If they want to replicate, they have to infect the host.