Computer virus

Sometimes we confuse between virus, trojan, worm, and spyware. Let me explain it in a simple way for each part. Let’s start with computer virus.

Computer Virus

Definition:

A virus is a computer program that initiates an action on a computer (infects it) without the user’s consent. The original virus may modify the copies, or the copies may modify themselves, as occurs in a metamorphic virus. A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or the Internet, or by carrying it on a removable medium such as a floppy disk, CD, or USB drive. Meanwhile viruses can spread to other computers by infecting files on a network file system or a file system that is accessed by another computer.

Viruses generally have the following components:

- A replication mechanism that allows reproduction and enables the virus to move from one computer to other computers

- A trigger that is designed to execute the replication mechanism or the task of the virus

- A task or group of tasks that execute on a computer to destroy or alter files, change computer settings or configurations, or otherwise hinder or impede the operations of a computer or networking device

How to handle: using anti-virus software/program, using system restore on windows, reinstalling the operating system.

Common anti-virus

- Commercial:

Symantec Antivirus/Norton

McAfee

BitDefender

TrendMicro PC Cillin

Kaspersky

Norman

- Free

Grisfot AVG Free

ClamAV/ClamWin for Windows

Avast! Antivirus

PC Media Anti Virus (PCMAV) – Indonesia (pcmav.biz)

ANSAV – Indonesia

AVIRA

- Online scan

Norton/Symantec

Panda Antivirus

BitDefender

TrendMicro PC Cillin

Kaspersky

Resource:

http://en.wikipedia.org/wiki/Computer_virus

Other various resources found from the internet

~ by p&u on May 5, 2008.

6 Responses to “Computer virus”

  1. [...] viruses and worms, spyware does not usually self-replicate. Like many recent viruses; however, spyware—by [...]

  2. [...] anti-trojan (check the anti-virus and anti-spyware [...]

  3. [...] to replicate itself indefinitely or until a self-timing mechanism halts the process. Unlike a virus, it does not need to attach itself to an existing program. Worms usually cause harm to the network, [...]

  4. sorry… which free antivirus can run in win98?

  5. If you want to use the newest free antivirus in windows 98, i can suggest these antivirus:
    - PCMAV cleaner (not for the RTP/Real Time Protector) version 1.2
    - Clamwin (clamav for windows) version 0.93 (http://www.clamwin.com/)
    - avast! home edition version 4.8 (http://www.avast.com/eng/system-requirements-avast-home.html)

    I hope this answers your question. Thanks for asking.

  6. [...] sekaligus (biasanya akan memperlambat kerja komputer). Pada link posting berikut ini terdapat daftar dari antivirus yang cukup umum digunakan beserta tempat untuk [...]

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