Viruse - A virus is a small peace of software that piggybacks on real programs. For example, a virus might attach itself to program such as a spreedsheet program. Each time the spreadsheet program runs, the virus runs, too, and it has the chance to reproduce (by attaching to the programs of wreak havoc.
E-mail viruses - An e-mail virus travels as an attachment to e-mail messages, as usually replicates itself by automatically mailing itself to dozens of people in the victim's e-mail address book. Some e-mail viruses don't even require a double click -- they lunch when you view the infected message in the preview pane of your e-mail software.
Torjan horse - A Torjan horse is simply a computer program. The program claims to do one thing (it may claim to be a game) but instead does damage when you run it (it may erase your (hard disk). Torjan horse have no way to replicate automatically.
Worms - A worms is a small piece of software that uses computer networks and security holes to replicate itself. A copy of the worms scan the network for another machine that has specific security hole. It copies itself to the new machine using the security hole, and then starts replicating from there, as well.
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We need to have more tutorials on how to recognize a virus and avoid them. My sister just had one attack her computer and destroy everything on it. Now if there only were some way to prevent accidental laptop spills caused by stupidity...
ReplyDeleteKeeping Virus Away
ReplyDeleteLet us see some of the things that you should follow to keep the virus away form infecting your system.
1. Keep the floppy disk drive open.
2. Do not use pirated software.
3. Get shareware for some reputed company.
4. Run virus scanner/checker program regularly.
5. Use a memory resident anti virus program.
6. use write protect tab on the floppy disks.
7. Always keep current version of Anti-Virus software.
8. Backup the data regularly.
9. Watch out when you get a service engineer's visit.
10. Do not open e-mail attachments from unknown address.
11. Take care when downloading files from internet.
Virus Infection Symptoms:
ReplyDelete1. Unexplained slowdown of the system.
2. Decrease in the amount of available memory.
3. Increase in Bad sectors/Lost clusters etc.
4. Cannot Execute Executable Files.
5. Screen shows some Unusual output.
6. Drive's light turns on.
7. New ".COM" files appear for the "EXE" files.