A computer virus is a malicious
program designed to replicate itself and spread from one computer to another.
It can cause harm to a computer system, steal or delete data, and cause various
other problems.
Here are some types of computer viruses:
1. File infectors :- These viruses infect
executable files, such as .exe and .dll files.
2. Boot sector viruses :- These
viruses infect the boot sector of a hard drive or other storage device, making
it difficult to remove them.
3. Macro viruses :- These viruses infect
documents and spreadsheets that contain macros, which are sets of instructions
used to automate tasks in these applications.
4. Worms: These are standalone programs that
replicate themselves and spread over computer networks, consuming bandwidth and
slowing down computer systems.
5. Trojan horses :- These viruses disguise
themselves as legitimate programs and gain access to a computer system,
allowing hackers to gain control of the system or steal data.
6. Ransomware :- This type of virus encrypts files
on a computer system and demands a ransom payment in exchange for the
decryption key.
7. Rootkits :- These viruses gain access to a
computer system and hide their presence from antivirus software and other
security measures.
8. Spyware :- These viruses track user activity
on a computer system and transmit the information back to the hacker.
It is important to use antivirus software and keep it up-to-date to protect against these types of viruses. Additionally, it is important to be cautious when downloading files and opening emails from unknown sources, as these can be a source of viruses.
