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Which type of malware is a program or piece of code that is loaded onto a person’s computer without his knowledge and runs against his wishes?
1. computer virus
2. adware
3. phishing
4. trojan horse

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Correct Answer - Option 1 : computer virus

The correct answer is Computer virus.

  • A computer virus is a program or piece of code that gets loaded onto your computer without your knowledge and runs against your will.
    • A computer virus is a type of program that, with or without your permission, is installed on your personal computer to collect information about users, their computers or browsing habits, which you can do without your knowledge. Tracks it and sends it to the remote user.
  • "Malware" is short for malicious software and is used as a single term to refer to viruses, spyware, worms, etc.
    • It is designed to damage stand-alone computers or network PCs.
    • So wherever the word malware is used, it means that a program that is designed to harm your computer could be a virus, worm or Trojan.
    • Malware can be injected either through social engineering or by injecting it into a user's system without their knowledge.

  • Virus:
    • It is a program written to enter your computer and damage your files/data.
      • A virus might corrupt or delete data on your computer.
      • They can also replicate themselves.
    • A computer Virus is more dangerous than a computer worm as it makes changes or deletes your files while worms only replicate themselves without making changes to your files/data.
  • Spyware :
    • Spyware is a type of program that is installed with or without your permission on your personal computers to collect information about users, t
    • A hacker uses spyware to track your internet activities and steal the information without the host being aware of it.
    • Usually, banking details are the Target of such codes.
    • This software attacks the target and not just steals the information but also decelerates the system performance, especially when there is more than one program running on the system.
  • Trojan :
    • Trojans also open a backdoor entry to your computer which gives malicious users/programs access to your system, allowing confidential and personal information to be theft.
    • Trojan horse is not a virus.
    • It is a destructive program that looks like a genuine application.
  • Ransomware :
    • This type of malware encrypts a victim’s file and modifies the access rights of the file.
    • The attacker then asks for ransom from the victim to restore access to data upon payment. 

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