Computer Viruses And Its Effects On A Computer System

Memory Resident Virus is one type, they usually fix themselves inside the computer memory. They get activated every

Let’s say user (A) download an execution file (EXE) on his-her PC and double click on that file, if this file is infected the virus works based on the written code by the hacker/ attacker/ intruder and copy some files into the system. In case, user (A) does not have virus protection, the virus works perfect in destroying that computer or sending information from this computer to the attacker email. Viruses not only designed to destroy PC’s, but also designed to get information from

Computer virus is a program that can copy itself and infect a computer without the permission or knowledge of the user. Viruses perform some type of harmful activity such as accessing private information or corrupting

Abstract— In this paper you will learn when virus was made and how they are made and how they work. You should also get the understanding of the different types of virus and the implementation of virus.

The nature of the cyber threat has changed dramatically over the past 25 years. In the early days of the personal computer, hackers were mostly motivated by the lulz, or laughs. They hacked computer systems just to prove that they could do it or to make a point. One of the very first computer viruses to infect IBM PCs was the Brain virus, created in 1986 by brothers Amjad Farooq Alvi and Basit Farooq, aged 24 and 17, of Lahore, Pakistan. Their virus was intended to be innocuous in nature, to stop others from pirating the software the brothers had spent years developing. Brain worked by infecting the boot sector of a floppy disk as a means of preventing its copying and allowed the brothers to track illegal copies of their own software. The brothers, upset that others were pirating their software without paying for it, included an ominous warning which appeared on infected users screens:

Viruses and worms are malicious programs that self-replicate on computers or through computer systems without the user being cognizant. Worms are a series programs that repeat themselves from system to system minus the use of a host fie. Worms use methods to infiltrate remote computers and launch replicas of themselves like email messages or coping files to an accessible disk. A computer virus is a

83). Due to the rapid increase of computer viruses in the world, companies who program ant-virus software earn more profit because they provide the needed protection for the threats that are in the internet. As time passes by, computer viruses become tougher to deal with as a lot of hackers are well skilled in producing viruses that could cause trouble to their targets. Jessica Drew, the author of the article “The Benefits of Having Anti-virus Protection”, acknowledges that “Once viruses have infected your computer, they can drastically slow down your processing speeds, delete critical and important personal files and images, and in the worst case, cause irreparable physical damage to your computer. Viruses can cost you thousands in computer-replacement costs and cause you to lose very important documents and photos. The best anti-virus software can thwart 99.99 percent of known viruses”

Computer viruses are minute program which is “embedded inside an application or within a data file which can copy itself into another program“(Adams et al, 2008 ) for the sole determination of meddling with normal computer operations. The consequences may range from corruption and deletion of data; propagation of virus on to network and deployment through attachments through emails in order to further creating havoc to all associated computing devices.

An invisible organism enters your body. It penetrates into your tissues and then takes over the machinery in your own cells to make more copies of itself. This tiny infiltrator works silently, producing thousands of these clones that fill up the cell and cause it to explode. The clones mercilessly continue the process of invading, taking over and destroying cells. The result might be a minor inconvenience to you as the host, or it could result in a slow or rapid death. It depends only on which variant of this unwanted infiltrator overcomes your body’s defenses. There are cures to wipe out some types of these invisible intruders, but others are so difficult to eradicate or so readily adaptable, that the world’s greatest scientists

Malware is a class of malicious code that incorporates viruses, worms, and Trojan horses. Specialized communication tools are used by destructive malwares in order to spread. Malwares could be distributed by means of email and texts, Trojan horses dropped from web sites, and virus-infected records obtained from peer-to-peer connections. Malwares looks for existing flaws and loopholes in the system architecture to make a peaceful and simple entrance.

PREVIEW: First, I will give you information about the virus itself. Secondly, I will talk about why

By the year of 2016, investments in online security are expected to reach $86bn (Contu et al, 2012). Although this might seem a large sum of money, it is considered necessary since there is an increase in online risks from all over the world. Professional hackers develop malware on a global scale and on a 24/7 basis. Hackers have five objectives when spreading malware over the Internet: to infect/distribute, to steal, to persist, to control and for intelligence (Morris, 2010).

To understand the business of malware, one must understand how malware has evolved in the past twenty-five years. Malware, which includes all kinds of malicious software, was originally created to show the weaknesses of computers. The first type of malware, created in 1986, was a virus called “Brain.A. Brain.A was developed in Pakistan, by two brothers - Basit and Amjad. They wanted to prove that PC is not secure platform, so they created virus that was replicating using floppy disks” (Milošević). Even today malware is still used to check the security of machines.

There are an enormous amount of malicious software programs. The most common types are known as viruses and spyware. Spyware has

Many types of computer virus has been spreading in computers since 1960. The first a computer virus discovered in 1970 and called The Creeper virus on Arpanet browser (anon, 2013)