Be careful About These 7 Types of Viruses
Computer Virus is a malicious software program which is written intentionally to enter a computer without the user’s permission. A computer virus continuously spreads by replicating itself. When a file infected with virus is opened, the virus infects other files on the system and also spreads to other systems in network with the help of infected on files. Viruses damage the system by deleting files on the system, increasing file sizes or automatically formatting the system. There are different types of virus which affect a computer differently.
Boot Virus - It infects the Master Boot Record present on hard disks and infect Boot sector of floppy disk.
Polymorphic Viruses – Polymorphic viruses are coded in such a way that they infect a system and change their signature before infecting the next system. Thus, the Antivirus software finds it difficult to identify this virus, as it looks different after every infection. It also changes virus’s signature frequently to prevent Antivirus software from detecting it.
Macro Virus – When a macro is executed, it infects files on the system. For example, the Love Bug virus erases files on the infected system and e-mails a copy of the macro virus to contacts from user’s address book. Macro Virus spreads via e-mails attachments, discs ,networks ,modems and the Internet.
Worms – It may cause damage to the system such as deleting files from the system and may also slow down the system, For example, the Worm Sasser can cause damage such as sending mass e-mailing , It can also clog e-mail servers.
Trojans – A Trojan horse is a program that claims to do something but it actually does something that is not required, They are also known as backdoors, In most cases, a user launches it think it’s a genuine program.
Malware – Malware is a generic term for bad software. The work malware comes from the words malicious and software. Malicious code delivered through Web Browsers and Email clients, Back doors, Trojan horses , user level Rootkits and kernel level manipulation.
Types of malware include:
- Computer Viruses
- Computer Worms
- Trojan horses
- Logic bombs
- Spyware
- Adware
- Spam
- PopUps
Adware – Adware is a close relative of spyware. Adware is software that is installed on your computer to show you advertisements. Adware can slow your PC by using RAM and CPU cycles. It also slow your Internet connection by using bandwidth to retrieve advertisements.
Spyware – Spyware stores personal information and surfing habits of the user and sends them to its Website without informing the user. While installing an application, many spywares get installed as a free download.
 |
Be Aware Of These 6 Types Viruses |
Boot Virus - It infects the Master Boot Record present on hard disks and infect Boot sector of floppy disk.
Polymorphic Viruses – Polymorphic viruses are coded in such a way that they infect a system and change their signature before infecting the next system. Thus, the Antivirus software finds it difficult to identify this virus, as it looks different after every infection. It also changes virus’s signature frequently to prevent Antivirus software from detecting it.
Macro Virus – When a macro is executed, it infects files on the system. For example, the Love Bug virus erases files on the infected system and e-mails a copy of the macro virus to contacts from user’s address book. Macro Virus spreads via e-mails attachments, discs ,networks ,modems and the Internet.
Worms – It may cause damage to the system such as deleting files from the system and may also slow down the system, For example, the Worm Sasser can cause damage such as sending mass e-mailing , It can also clog e-mail servers.
Trojans – A Trojan horse is a program that claims to do something but it actually does something that is not required, They are also known as backdoors, In most cases, a user launches it think it’s a genuine program.
Malware – Malware is a generic term for bad software. The work malware comes from the words malicious and software. Malicious code delivered through Web Browsers and Email clients, Back doors, Trojan horses , user level Rootkits and kernel level manipulation.
Types of malware include:
- Computer Viruses
- Computer Worms
- Trojan horses
- Logic bombs
- Spyware
- Adware
- Spam
- PopUps
Adware – Adware is a close relative of spyware. Adware is software that is installed on your computer to show you advertisements. Adware can slow your PC by using RAM and CPU cycles. It also slow your Internet connection by using bandwidth to retrieve advertisements.
Spyware – Spyware stores personal information and surfing habits of the user and sends them to its Website without informing the user. While installing an application, many spywares get installed as a free download.
Comments
Post a Comment