LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
in Computer by (30.0k points)
closed by
With reference to computers and the internet, which of the following appears to be harmless but actually produces harmful results?
1. Worm
2. Trojan horse
3. Patch
4. Virus hoax

1 Answer

0 votes
by (53.7k points)
selected by
Best answer
Correct Answer - Option 2 : Trojan horse

The correct answer is Trojan horse.

  • With reference to computers and the internet, Trojan Horse appears to be harmless but actually produces harmful results

  • A Trojan horse, or Trojan, is a type of malicious code or software that looks legitimate but can take control of your computer.
  • A Trojan is designed to damage, disrupt, steal, or in general, inflict some other harmful action on your data or network.
  • A Trojan acts as a bona fide application or file to trick you.
  • It seeks to deceive you into loading and executing the malware on your device.
  • Once installed, a Trojan can perform the action it was designed for.
  • A Trojan is sometimes called a Trojan virus or a Trojan horse virus, but that’s a misnomer.
  • Viruses can execute and replicate themselves, a Trojan cannot.
  • A user has to execute Trojans.
  • Even so, Trojan malware and Trojan virus are often used interchangeably.


  • Trojans work -
  • For example, You might think you’ve received an email from someone you know and click on what looks like a legitimate attachment.
  • But you’ve been fooled, the email is from a cybercriminal, and the file you clicked on and downloaded and opened has gone on to install malware on your device.
  • When you execute the program, the malware can spread to other files and damage your computer.
  • Common types of Trojan malware
    • Backdoor Trojan
    • Downloader Trojan
    • Mailfinder Trojan
    • Ransom Trojan
    • Rootkit Trojan
    • SMS Trojan

  • An Internet worm is a type of malicious software (malware) that self-replicates and distributes copies of itself to its network.
  • These independent virtual viruses spread through the Internet, break into computers and replicate without intervention from and unbeknownst to computer users.
  • A patch is a set of changes to a computer program or its supporting data designed to update, fix, or improve it.
  • This includes fixing security vulnerabilities and other bugs, with such patches usually being called bugfixes or bug fixes.
  • A computer virus hoax is a message warning the recipients of a non-existent computer virus threat.
  • The message is usually a chain e-mail that tells the recipients to forward it to everyone they know, but it can also be in the form of a pop-up window.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.