FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -How do computer viruses spread? Viruses can be spread several ways, including via networks, discs, email attachments or external storage devices like USB sticks. Since connections between devices were once far more limited than today, early computer viruses were commonly spread through infected floppy disks.

Detailed explanation-2: -Malware can use known software vulnerabilities to infect your PC. A vulnerability is like a hole in your software that can give malware access to your PC. When you go to a website, it can try to use vulnerabilities in your web browser to infect your PC with malware.

Detailed explanation-3: -Typically, computer viruses spread through malicious online downloads, infected email attachments, or by plugging in infected hardware like an external flash drive (USB stick). Computer viruses can spread through almost any method of file sharing, as long as the virus can avoid detection by antivirus programs.

Detailed explanation-4: -A boot sector virus is a type of virus that infects the boot sector of floppy disks or the primary boot record of hard disks (some infect the boot sector of the hard disk instead of the primary boot record).

Detailed explanation-5: -Whenever you copy files or download files from an infected removable medium like USB, CD, DVD drives then the virus may enter into your system. Always scan the removable medium before you open.