FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Q. Why would an email virus email itself to everyone in your address book? This may open a “back door” into your computer system through which your personal information can be harvested. It can also use your computer power and network bandwidth to send thousands of spam emails to others.

Detailed explanation-2: -Adware is often known for being an aggressive advertising software that puts unwanted advertising on your computer screen. Malicious adware can collect data on you, redirect you to advertising sites, and change your internet browser settings, your default browser and search settings, and your homepage.

Detailed explanation-3: -Worms spread from computer to computer, but unlike a virus, it has the capability to travel without any help from a person. A worm takes advantage of file or information transport features on your system, which allows it to travel unaided.

Detailed explanation-4: -A computer virus is malicious code that replicates by copying itself to another program, computer boot sector or document and changes how a computer works. A virus spreads between systems after some type of human intervention.

Detailed explanation-5: -Spyware is a type of malicious software–or malware–that is installed on a computing device without the end user’s knowledge. It invades the device, steals sensitive information and internet usage data, and relays it to advertisers, data firms or external users.