Top 5 ways to know and prevent, protect your computer from viruses
Meaning of computer viruses
Computer virus is a program software written and used to infect a computer. The virus has the ability to replicate and attach copies of itself to other object or programs in the computer and by so doing, causing damage to the other programs.
Type of computer virus
1.Boot sector virus:
In both the floppy and hard disk, the first sector is called the boot sector. A virus that lurks in the boot sector is called a boot sector virus, the virus make room for it self by moving data from the boot sector to the next place on the disk. Whenever the computer tries to boot from any of the drives that is infected, the virus will copy it self to the RAM memory chip and render it in- bootable.
2. Executable file virus:
These are viruses that attack executable files. The file may have a file extension of exe or com. These file help the program to run. When these programs try to run, the virus that attaches itself to the file will get activated, causing damage to the file.
3. Attacks on documents virus:
This type of virus attacks the content of a document, rendering it useless, often , the content of the document is lost when attacks by the virus.
Example of virus
1. Trojan horse:
The Trojan horse is a virus program that hides inside another apparently program that is running, the virus damage the file.
2. Sleeper virus:
Sleeper virus is basically a wide area network ( WAN ) virus that infects and reproduces itself making operating system vulnerable this infect computer to hackers. Once the virus infect computer in the network, it creates an HTTP server, reset the machine system restore point and then downloads file from the hackers website making it possible for the hackers to steel finance and personal information.
3. Logic bomb:
This computer virus activated itself where it is hiding in the computer when certain conditions are met for instance, logic bomb called THUS will sleep in the computer until 13th December when it erases the hard disk.
4. Alabama virus:
This is a computer virus that was discovered in October 1989 on a computer of Hebrew university in Jerusalem. This virus infects standard file. When the file is executed, the Alabama virus will look for another file a infect.
5. Christmas virus:
This is a quick- spreading computer virus, that reformists the computer hard drive on Christmas Day.
Source of viruses
source of computer virus include the following
1. Infected CD- ROM and diskette:
Once any of these media is in touch with an infected environment, it may contract the virus and will pass it on to any computer that reads data from it.
2. E-mail:
Computer viruses are often spread by attachment in e-mail messages or instant messaging. When such attachment that are infected are opened, the virus infects The computer used to open the e- mail attachment.
3. Internet download:
An internet download folder may be infected with a computer virus.
4. Illegal duplication of software:
A computer virus may come with a duplicate software. As the software is being copied, there can be a hidden and illicit software that comes along with the copied or duplicated software. Often these hidden in spyware, as they are generally know, are intentionally created to hurt The pirate computer.
Sign of infection of a computer by virus
this is how to know if a computer virus is in your computer
(I). The computer becomes very slow in responding to instructions.
(II). There may be strange dots wandering around the screen of the computer.
(III). The process of saving a file may be incomplete even though, the computer indicates its completion. Such files may not open subsequent.
(IV). The whole computer may begin to malfunction.
(V). Saved file may disappear from the folder one after the other.
(VI). Strange character may appear on the screen.
Virus detection (Antivirus)
An antivirus acts as a protective wall in a computer. It protect the computer from infection and removes or quarantines viruses that have already infected the system. It also protect the system from viruses, adware and spyware That come through the internet some popular antivirus programs are Norton antivirus, McAfee virus scan, DR Solomon tool kit, Avast, Pcillin, AVG, Quick heal.
Virus prevention
It is important to keep viruses at an arms length because they threaten the data, the program and the computer hardware. Here are some ways to keep viruses off your computer.
1. Install a good antivirus software in your computer. This antivirus should be updated regularly to counter new viruses.
2. Have a backup if your file stored in a different location. Backups are important for two reasons: they replace recover files from the system when there is a general system crash.
3. Scan all new software introduce to your computer and scan all diskette CD-ROM and flash drives and introduce to your computer.
4. As much as possible, avoid booting your system from the diskette, the CD-ROM and the flash. Any diskette can be infected by boot sector virus.
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Thank you for your view I hope this help you to know how to prevent your computer and other gadget form computer viruses. I thing you need to know is that not only your computer can get viruses, viruses can in to your phone, tab, digital watch, and other more. So like I said before if you have any questions just comment it below.
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