what is computer virus and antivirus pdf

What Is Computer Virus And Antivirus Pdf

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A virus is a computer code or program, which is capable of affecting your computer data badly by corrupting or destroying them. Computer virus has the tendency to make its duplicate copies at a swift pace, and also spread it across every folder and damage the data of your computer system. A computer virus is actually a malicious software program or "malware" that, when infecting your system, replicates itself by modifying other computer programs and inserting its own code.

A computer virus is a malicious piece of computer code designed to spread from device to device. A subset of malware, these self-copying threats are usually designed to damage a device or steal data.

The purpose of this paper is to discuss various types of computer viruses, along with their characteristics, working, effects on the computer systems and to suggest measures for detecting the virus infection in a computer system and to elaborate means of prevention. The author undertook an extensive study and review of the literature available online and on relevant web sites on the present topic. A large number of viruses were found during the study, which are causing serious damages to computer systems. The author suggests ways to detect and prevent the different computer viruses.

What is a Computer Virus?

A computer virus [1] is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code. Computer viruses generally require a 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. Therefore, it is not restricted by the host program , but can run independently and actively carry out attacks. Computer viruses cause billions of dollars' worth of economic damage each year. In response, free, open-source anti-virus tools have been developed, and an industry of antivirus software has cropped up, selling or freely distributing virus protection to users of various operating systems.

Computer virus

A computer virus is not that different from a real-life virus like, say, the flu. When contracted, they can both remain dormant in the system only to become active when you least expect them to. If you detect the threat early and take appropriate measures on time, you will be able to keep the symptoms under control and recover very quickly. Left untreated, however, not only can viruses spread to others but they can also wreak havoc on the health and wellbeing of their host. Key takeaway: A computer virus is malicious software or code that infects files and programs on your computer. Opening an infected file will execute the virus code and result in damage to your files, your computer, and your overall internet security. Read on to learn about the most common types of computer viruses and the ways to get rid of them.

A computer virus is a malicious program that self-replicates by copying itself to another program. In other words, the computer virus spreads by itself into other executable code or documents. The purpose of creating a computer virus is to infect vulnerable systems, gain admin control and steal user sensitive data. Hackers design computer viruses with malicious intent and prey on online users by tricking them. One of the ideal methods by which viruses spread is through emails — opening the attachment in the email, visiting an infected website, clicking on an executable file, or viewing an infected advertisement can cause the virus to spread to your system.

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What is a computer virus? •Computer viruses are small software programs that are. designed to spread from one computer to another and to.


What is a Computer Virus and How Can I Protect My Computer?

Secure Sockets Layer SSL is a protocol developed by Netscape for establishing an encrypted link between a web server and a browser. SSL is an industry standard which transmits private data securely over the Internet by encrypting it. It is used by many websites to protect the online transactions of their customers. Description: SSL functions around a cryptographic system which uses three keys t.

 Это была шутка, Мидж.  - Но он знал, что сказанного не вернешь. ГЛАВА 62 Коммандер и Сьюзан стояли у закрытого люка и обсуждали, что делать .

 - Вот откуда шрам. - Весьма сомнительно, чтобы Танкадо связал свои ощущения с выстрелом. - И все же он отдал кольцо, - сказал Фонтейн. - Вы правы, сэр.

Top 5 Types & Examples

Стратмор молчал. Положение оказалось куда серьезнее, чем предполагала Сьюзан. Самое шокирующее обстоятельство заключалось в том, что Танкадо дал ситуации зайти слишком. Он должен был знать, что случится, если АНБ не получит кольцо, - и все же в последние секунды жизни отдал его кому-то. Он не хотел, чтобы оно попало в АНБ.

Он немного смешался. Сьюзан напряглась как тигрица, защищающая своего детеныша. - Сьюзан, ты же говорила с. Разве Дэвид тебе не объяснил. Она была слишком возбуждена, чтобы ответить.

Только мы трое. Было ужасно жарко.

 - Да будет. На вид вы человек состоятельный. Дайте немножко денег, чтобы я могла вернуться домой.

То, что она увидела, казалось неправдоподобным. Половина лица Хейла была залита кровью, на ковре расплылось темное пятно. Сьюзан отпрянула.

Держитесь.

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