Meaning Definition, Characteristics and Mechanical transmission of infectious viruses and virus variants

1. Meaning Definition of Computer Viruses 

A computer virus is a computer program that duplicates or duplicate themselves by inserting a copy or copies of itself into the storage media / documents as well as into the network secretly without the knowledge of the user's computer. The effects of computer viruses are very diverse ranging from just strange messages appear to damage the computer and delete files or documents we. 

2. Meaning Definition of Variant Virus Worm, Trojan and Spyware 

A. Worm 

Worm is a potential security weaknesses or gaps in our computers that allows computers are infected with the virus without having to execute a file that generally occur on the network. 

B. Trojan 

Trojan is a program that lets you control another computer over a network or the Internet.

C. Spyware 

Spyware is an application that leaked the information data in the user's habits or behavior using a computer to an outside party without us knowing it. Usually used by the party advertisers. 

If we see irregularities in the storage medium such as a file called strange that we never made or file is not the type of application but claimed as an application then do not we click, we go or we run that computer viruses are not transmitted to the computer that we use. 

Signs / Computer Makes You Exposed / Infected Computer Virus: 

• The computer is running slower than normal. 
• Often out error messages or odd-odd.
• Change the display on a computer. 
• Storage media such as floppy disks, flash, and so on directly copying the files weird without us coffee when we connect to the computer.
• Computer crashes like it restarts itself or while it is running. 
• Like the message or writing strange.
• The computer hangs or stops responding to us.
• Hard disk can not be accessed.
• Printers and other devices can not be used even though no hardware problems and software drivers.
• Often there is a menu or dialog box that an error or broken.
• Loss of some basic computer functions.
• The computer attempts to connect to the internet or a network without our order.
• Files that we store on computers or storage media away or hidden viruses and others.

Examples of forms of media dissemination of computer viruses from one computer to another computer: 

• Storage Media (diskettes, flash, external hard disk, zipdisk, cd, dvd, bluray disc, cartridge, etc.).
• The network lan, wan, man, internet and so forth.
• File attachment or file attachments in emails or other electronic messages.
• File software (software) virus-ridden computer.
• The most effective way that we are not exposed to computer viruses is to install computer programs which are original or not original, not pirated a virus ridden and friends, do not connect your computer to the network or the Internet, and never open or execute files from a computer another. 

But way too extreme and less slang in everyday use of computers as we normally exchange data or files with other computers in the form of job files, image files, file attachments, music files, video files, and so forth. 

So to avoid our computer infected by a virus and then we must be vigilant in its interaction with the file from another computer, the files from the storage media of another person, an email attachment, file exchange network, our computer security holes, and others. Attach a good antivirus which is updated periodically as well as programs to network firewalls and anti-spyware and adware to tackle another type of computer trouble.