A computer virus is a type of malicious software (malware) designed to replicate itself and spread to other computers. It attaches itself to legitimate programs or files, and when these programs or files are executed, the virus activates and can cause harm to the system.
Viruses can make copies of themselves and spread to other files or systems. This often happens when an infected file is shared or transferred.
A virus usually requires a specific action to activate, such as opening an infected file or running a compromised program.
Once activated, a virus can alter or corrupt files, steal information, or perform other malicious activities.
Many viruses carry a "payload," which is the part of the virus that performs the harmful actions, such as deleting files, logging keystrokes, or creating backdoors for further exploitation.
Viruses can spread through various means, including email attachments, infected websites, or removable media like USB drives.
Protection against viruses typically involves using antivirus software, keeping systems updated with the latest security patches, and practicing safe computing habits, like avoiding suspicious emails and downloads.
