Types of computer virus pdf

Poliovirus, rabies virus the type of disease murine leukemia virus geographic locations sendai virus, coxsackie virus their discovers epsteinbarr virus how they were originally. Multiple choice questions on computer viruses for ibps po, nicl ao, dena bank po pgdbf, niacl assistantao, bob po, ibps clerk, boi, and other competitive exams. It has the capacity to modify or replicate itself, in which case it will continue spreading. A virus attacks a computer to spread other malware, allows remote control by. Departmentof commerce nationalinstituteof standardsand technology nist publications nistspecialpublication500166 computervirusesand relatedthreats. It is so stable that it can survive for years in cigars and cigarettes made from infected leaves. Viruses may occur on almost any computer platform with enough programming capability. The computer gets infected through the replication. The master boot record mbr stores the disks primary. Now, check the different types of computer virus programs that caused significant damage to the computers in the year. The types of computer viruses there are six broad categories or types of computer viruses. Unlike a computer virus, a computer worm does not need to attach itself to an existing program. Human viruses cause a variety of maladies, depending on the virus type and the tissues infected.

Different types of computer viruses computer virus classification. A computer virus is a type of malicious software program. Like biological ones, computer viruses enter a host through a carrier. Com files, data files such as microsoft word documents or pdf files, or in the boot sector of the hosts hard drive or some combination of all of these. In order to avoid detection by antivirus, this type of virus exists in encrypted form. Different types of computer virus classification are given below. Multiple choice questions on computer viruses aspirants zone. Various kinds of antivirus software have been developed which detect viruses and take. Computer viruses from an annoyance to a serious threat. Viruses can infect all types of life forms, from animals and plants to microorganisms.

Worms tend to harm the network by consuming network bandwidth where viruses infect or. All humans contract multiple viruses throughout the course of life. A computer virus is a computer program that can spread across computers and networks by making copies of itself, usually without the users knowledge. Computer viruses encyclopedia of life support systems. They stay there and takes control over the memory which they allocate blocks in the memory so they can run. These kinds of programs are primarily written to steal or destroy computer data. Like biological ones, computer viruses enter a host through a. A person has to write the code, test it to make sure it spreads properly and then release it. An even more dangerous type of virus is one capable of transmitting itself across networks. A computer virus is a computer program that can spread across computers and. An estimated 50,000 computer viruses provide a variety of effects ranging from the merely unpleasant to the catastrophic. A computer virus is an unwanted malicious program designed to cause damage to computers on a large scale. Prevention methods are designed to stop the computer virus.

Types of computer viruses and their painful effects. Viruses may occur on almost any computer platform with. Most systems catch viruses due to program bugs, the vulnerability of operating systems, and poor security practices. One of the first known types of viruses, the boot virus infects the operating system initialization. Computer viruses can wreck havoc to the operations of the computer. After the work, these types of viruses try to hide from the antivirus application by encrypting parts of the virus itself. Computer viruses come in different forms to infect the system in different ways.

Prevention methods are designed to stop the computer virus from infecting other programs and from doing collateral. They attack all platforms and are written in all popular computer languages. However, this paper does not cover virus prevention and scanning techniques. As internet connectivity grows, the ease with which computer viruses can spread also grows. A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code. Macro virus this is one of the types of viruses on computers which infects files that are made with the use of certain programs or applications with macros such as. When we talk about computer security, the virus is the leading threat. Types of computer security threats and how to avoid them. Designed to replicate relentlessly, computer viruses infect your programs and files, alter the way your computer operates or stop it from working altogether. On this page, you will learn everything you need to know about the types, symptoms, protection, prevention, detection and removal of computer viruses.

Different types of computer viruses computer virus. Luckily, this type of virus is relatively rare, though the growth of windows portable executable files is giving them a new lease of life. A computer virus is a malware program that is written intentionally to gain access to a computer without its owners permission. A computer virus is a type of malware malicious software or code that is designed to spread from computer to computer and perform. Install antivirus software and update it regularly antivirus programs can detect and often disin fect viruses. Malware is a general name for all programs that are harmful. A computer virus is a type of malware that is intentionally written to gain entry into your computer, without.

Perhaps the most wellknown computer security threat, a computer virus is a program written to alter the way a computer operates, without the permission or knowledge of. Some infamous examples of viruses over the years are the concept virus, the chernobyl virus also known as cih, the anna kournikova virus, brain and ravmone. As always, taking sensible steps to protect yourself is preferable to dealing with the potentially crippling fallout if youre unlucky enough to get infected. The computer gets infected through the replication of malicious code. If the software offers onaccess virus checking, use it. A computer virus is a malicious software program malware that can infect a computer by modifying or deleting data files, boot sector of a hard disk drive or causes a software program. One of the most common types of computer viruses, the direct action virus, attaches to. However, the ability to replicate itself is the common criterion that distinguishes a virus from other kinds of software. Computer viruses are classified according to their nature of infection and behavior. A virus code when executed, replicates itself by modifying other computer programs. Computer virus refers to a program which damages computer systems andor destroys or erases data files 3.

Problems and solutions article pdf available in library hi tech news 297. A computer virus is a type of malware malicious software or code that is designed to spread from computer to computer and perform harmful activities such as corrupting and disrupting. A computer virus is one type of malware that inserts its virus code to multiply itself by altering the programs and applications. Hence specific characteristics of particular computer viruses, or of particular types of computer viruses, must be used. Most often, the origin of the virus is difficult to trace. A computer virus, much like a flu virus, is designed to spread from host to host and has the ability to replicate itself. A computer virus is a program whose purpose is to cause damage, steal data, take control, andor to spread to other software. A computer virus is a type of computer program that, when executed, replicates itself by. Similarly, in the same way that flu viruses cannot reproduce without a host. Some of the most common viruses are, boot sector virus.