What is a Trojan horse How does it spread?

What is the plot of Trojan Horse?

What is the Trojan Horse operation? An alleged plot by Islamic fundamentalists to take over Birmingham schools in the East of the city by ousting headteachers and staff through dirty tricks…

How to check computer for Trojan Horse virus?

You can check your computer thoroughly for trojan horses with any reputable antivirus/antimalware software. You can also select Scan Options from the Windows search bar by typing virus, …

What are the most common misconceptions about computer viruses?

The most common misconception about Computer Viruses is that they’re the same thing as a Computer Worm or Trojan Horse. While the words Trojan, Worm and Virus are often used interchangeably, they are not the same.

What are the most dangerous Trojans?

A number of trojans are known to be malicious in government, including the Swiss MiniPanzer and MegaPanzer, as well as the German “state trojan” nicknamed R2D2. Governmentware in Germany exploits security gaps that are unknown to the general public and accesses smartphone data before it is encrypted.

What is the difference between Worms and viruses?

What Is The Difference Between Viruses Worms And Trojan Horses? Worms are considered to be sub-classes of viruses because they are designed similarly to viruses. Viruses can travel without the help of a person, but worms can spread from computer to computer.

How does Trojan Horse virus spread?

Viruses called worms replicate themselves and can spread via the network to other computers. A computer system or a computer network can be infected with Trojan Horse malware. The replication does not require a host.

What is a computer worm?

What is a Computer Worm? A Worm is like a Computer Virus by its design but is a sub-class of a Virus or Trojan Horse. Worms spread from computer to computer, but unlike a virus, it has the capability to travel without attaching to a host program and can run independently.

What are the disadvantages of computer viruses?

These viruses have the capability of spreading from one computer to another. They are also capable of multiplying. Viruses cause myriads of working challenges to computers ranging from destruction of files, slowing down computer performance, renaming files in computers and eventually making it difficult to access stored files (Szor, 2005).

What are some common myths about computer viruses?

There are a number of common myths surrounding computer viruses: Any computer error message indicates virus infection. Viruses and Warms Always require user-interaction. Email attachments from known senders are safe. Antivirus programs will stop all threats. Viruses can inflict physical damage on your computer.

What are the main causes of computer viruses?

1. Computer Viruses. Computer viruses earned their name due to their ability to “infect” multiple files on a computer. They spread to other machines when infected files are sent via email or when carried by users on physical media, such as USB drives or (in the early days) floppy disks.

What is the difference between Trojan and worm and virus?

Although the terms Trojan, worm and virus are often used interchangeably, they are not similar. Viruses, worms, and trojan horses are all malicious programs that can damage your computer, but there are differences between the three, and knowing these differences can help you better protect your computer from their often-harmful effects.

What is the deadliest Trojan ever found?

Zeus – This is the deadliest Trojan found to date. It is a crimeware toolkit that builds its own Trojan horse that includes polymorphic versions of Trojans, drive-by downloads, and form grabbing to extract critical and sensitive information of the victim.

What is the difference between a worm and a Trojan Horse virus?

Originally Answered: What is the difference between a worm and a trojan horse virus? There’s no such thing as a “trojan horse virus.” Worms, Trojan horses, and viruses are three different things. A worm is a computer program that copies itself.

What is the difference between malware and viruses?

Malware is a broader term given for all these unwanted/dangerous programs. A malware is a computer program used to perform unwanted tasks in a device. Malware are of different kind such as Trojan Horse, Adware, Scareware, Spyware, Worms etc. Viruses-Software that replicates itself and spreads into your device to damage or delete files.

What is computer virus?

t. e. A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code. If this replication succeeds, the affected areas are then said to be “infected” with a computer virus. Computer viruses generally require a host program.

How does a computer virus infect a host program?

The virus writes its own code into the host program. When the program runs, the written virus program is executed first, causing infection and damage. A computer worm does not need a host program, as it is an independent program or code chunk.

What is the history of computer viruses?

Traditional computer viruses emerged in the 1980s, driven by the spread of personal computers and the resultant increase in bulletin board system (BBS), modem use, and software sharing. Bulletin board –driven software sharing contributed directly to the spread of Trojan horse programs, and viruses were written to infect popularly traded software.

What are the characteristics of a virus?

Here are some distinguishing characteristics: A virus is a relatively small file that can copy itself into another file or program (its host). It can be transmitted only if its host file or program is transmitted. Some viruses are designed to change themselves slightly in order to make their detection and removal more difficult.

Why do computer viruses change themselves?

Some viruses are designed to change themselves slightly in order to make their detection and removal more difficult. Many viruses are merely annoyances, but some can be very destructive. As a whole, they are less common now than in the past. For more information, see the Wikipedia page on Computer virus.

How has the threat of computer viruses changed over the years?

The scope of the threat has changed significantly in the past few years, says Sal Viveros, director of McAfee Active Virus Defense at Network Associates Inc., a Santa Clara, Calif.-based vendor that develops programs to protect against malicious software. “Five or six years ago, viruses were spread by floppies,” Viveros says.

What are some common mistakes people make about computer viruses?

The most common blunder people make when the topic of a computer virus arises is to refer to a worm or Trojan horse as a virus. The phrases are used interchangeably, but they are not the same thing. One common mistake that people make when the topic of a computer virus arises is to refer to a worm or Trojan horse as a virus.

What are the main parts of a computer virus?

Secondly, every computer virus must contain a routine to copy itself into the program which the search routine locates. The three main virus parts are: Also called the infection vector, this is how the virus spreads or propagates. A virus typically has a search routine, which locates new files or new disks for infection.

What are the most common computer viruses?

Some of these viruses include Melissa, the Anna Kournikova, MyDoom, Sasser & Netsky, the ILOVEYOU virus, The Klez Virus, Code Red and Code Red II, Nimda virus, SQL Slammer/Sapphire virus, Leap-A/Oompa-A virus, and Storm Worm (US-CERT, 2012). All these viruses are tools used by hackers to destroy and access remote computer files.

What are the most common misconceptions about malware?

One of the most common misconceptions about malware is the assumption that infection is obvious. Users often assume they’ll know if their computer has been compromised. Typically, however, the intent of malware is to perform their task (s) for as long as possible.

What is the difference between Trojan Trojan and virus?

Trojans are more specific and that term is usually used to describe a standalone malicious file or program that, unlike a Virus, does not try to interfere with or modify an existing file but will actually pretend to be a legitimate file or program.

How does a virus program take action?

The virus program has managed to access the target user’s computer or software, but during this stage, the virus does not take any action. The virus will eventually be activated by the “trigger” which states which event will execute the virus, such as a date, the presence of another program or file,…