Introduction
Malwares
Malicious software or malware is software designed for malicious purposes.Some malware may delete, overwrite, or steal user data. In general, this type of software can cause damage to the user’s computer and may steal vital information.Since this is a broad definition, malware can be classified into categories such as viruses, worms, trojan horses, spyware, adware, or botnets. Since there is substantial overlap between these type of malware, we refer to them simply as “viruses”. We can further classify viruses based on the way they try to conceal themselves from being detected by antivirus programs . These categories are “encrypted,” “polymorphic,” and “metamorphic.”
2.1 Encrypted Viruses
“Encrypted viruses” refer to those viruses that encrypt their body using a specified encryption algorithm but using different keys at every infection. Each encrypted virus has a decryption routine that usually remains the same, despite the fact that the keys change between infections. Therefore, it is possible to detect this class of viruses by analyzing the decryptor in order to obtain a reasonable signature. Figure 1 shows an encrypted virus example. Encrypted viruses tend to use simple algorithms for encryption. Common variants use algorithms such as XORing the body of the virus with the encryption key. Despite its effort to encrypt its body, this type of viruses can be easily detected by signature detection.
Fig 2 illustrates a simple encryption code written
You sure have heard before terms such as virus, worm, Trojan or rootkit when people discuss internet security. These names describe types of programs used by internet criminals or hackers to hack and take over computers and mobile devices. All of these different terms can be simply called malware.
Malware refers to any computer program that is designed to do things that are harmful to or unwanted by a computer's legitimate user.
As we know virus protection software is a code written by one of the programing languages that we know. This code works as a search engine looking for infected files in the entire system or specific locations on the system. The idea depends on two important factors which are, search engine and viruses’ data base. The following scenario explains how people get viruses and how virus protection software works.
Described as a virus
The new form of criminals that sit behind a desk in slipper and being able to steal personal information by using malware. It may seem unbelievable that your identity can be easily stole from you owe personal computer. One of the best ways to avoid a computer from being infected from a malware is to avoid opening any unfamiliar documents on your computer. Any emails that is unknown delete and do not open.
Malicious code can deny or degrade the availability of computing services; steal, alter, or insert information; and destroy any potential evidence for criminal prosecution. Various types of malicious code exist including viruses, worms, and scripts using active content.
A computer virus is a malware program that, when executed copies itself into other data files, computer programs, or the boot sector of the hard drive with 95% of viruses doing no more than that. (1)(2). A virus might attach itself to a program such as a word document program. Each time the word document program runs, the virus runs too and it has the chance to reproduce by attaching to other programs. (3) Nowadays, it is extremely important to be aware of viruses because they can cause very dangerous consequences such as identity theft and fraud. When people generally think about computer viruses, they normally think about an attack on a computer system, however, they may not be aware of how common computer viruses are. It can be beneficial to know a few of the different types of viruses, the kind of damage they can cause and methods to protect yourself from them. In this essay, we will be covering when computer viruses first made an appearance and contrasting this to how they are like now on social media. Also, we will be covering how they work and what can be done to prevent the growing risks of computer viruses on social media.
This paper will firstly introduce you to the 1) History of virus 2) We will learn the types of virus and how they are used 3) The types of algorithm used to program virus and what goes into a program. 4) We will also include how to keep your computer safe from virus. You will begin to understand what virus are and how to keep yourself safe from them. We will also compare the free software to the paid antivirus software which is better.
Computer viruses have been around just about as long as the personal computer has existed. With the advent of the Internet, the ability of viruses to rapidly spread has increased substantially. Despite this increase in capability to infect large numbers of computers across international borders, the definition of a computer virus has not substantially changed over
The purpose of this research paper is to investigate the huge problem that the world is facing when it comes to malware and the infection of the world’s large smart phone community. In the world today there are over 7 billion phones that is at risk, I will be looking to identify some of the threats. We will also tackle the issue of combating the attacks of malware. Malware can be very costly and dangerous to the everyday person. Apple machine was once thought to safe from malware and viruses; however, the security of the Apple that was perceived by most has come to a halt. Earlier this year in January, a new tech support scam found its way onto iMacs and MacBook’s, and froze the user’s system by repeatedly opening iTunes. The installed malware
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
Malwares are mischievous programs crafted to agitate or forbid normal operations to gather selected information which may lead to loss of privacy through
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