FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Computer viruses are frequently spread by attachments in email messages or by instant messaging messages. Therefore, you must never open an email attachment unless you know who sent the message or you are expecting the email attachment.

Detailed explanation-2: -Phones get viruses the same way computers get viruses. Clicking on a suspicious link or attachment from unknown sources is a common way phones get infected . These attachments can be present in text messages, social media messages, or emails.

Detailed explanation-3: -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-4: -Message carrying virus does not infect the program and files but sometimes it produces unnecessary message or picture on the screen which disturbs the computer user. Boot sector virus infects the information system during the start-up process. It tends to create bad sector of the hard drive or floppy disk.

Detailed explanation-5: -Email viruses often spread by causing the malicious message to be sent to everyone in the original victim’s address book. Simply put, an email virus is a malicious code or a link to malicious code sent via email. The virus has the ability to replicate itself so it can quickly spread from one device to another.