A virus is a computer program that enters the computer system by attaching itself to another computer program, and spreads itself across the system. The full form of VIRUS is Vital Information Resource Under Seize.
What does a Computer virus do?
A computer virus is capable of performing the following tasks:
1) It can infect executable program files, such as word processors, spreadsheets, and the operating system program.
2) It can infect disks by attaching itself to special programs in the hard disk, called boot records. )These are the programs, the computer uses to start up.
3) It can infect a file before it is attached to an email message or transferred to a disk, and thus spread from one computer to another.
What are the in-capabilities of Computer virus?
A computer virus is incapable of performing the following tasks:
1) It cannot infect files on write protected discs (for example: CD-ROM )
2) It cannot infect computer hardware for examples: monitor and keyboard. It infects only software.
Hackers refers to the people, who use their skills to enter into computer systems without permission. Hackers are computer enthusiasts who break into secure systems to gain knowledge about them and possibly use this knowledge to play pranks.
A Cracker is malicious programmer, who gains unauthorised access to computer systems for the purpose of stealing, altering or corrupting information. Crackers often destroy confidential or crucial data of the systems they invade. They break the security of application software and create destructive programs like viruses.
 |
| Hackers |
How does a Computer virus spread?
Computer viruses spread from one computer to another by transfer of infected data through emails, pen drives, or other sources.
Author
Hi, Its me Hafeez. A webdesigner, blogspot developer and UI/UX Designer. I am a certified Themeforest top Author and Front-End Developer. I'am business speaker, marketer, Blogger and Javascript Programmer.
0 Comments:
Post a Comment