Download Boot viruses

Name: AKANDE SUSANNAH
WURAOLA
Dept: COMPUTER ENGINEERING
Course code :GST 115
FIVE EFFECTS OF COMPUTER VIRUS .
A computer virus is a type of malware that is intentionally
written to gain entry into your computer, without your
knowledge or permission. It has the capacity to modify or
replicate itself, in which case it will continue spreading.
There are varying effects of computer virus. While some
simply replicate themselves, others adversely affect the
programs and consequently, the system’s performance. This
therefore underlines the importance of not assuming that the
virus is harmless and leaving it in the system. Computer
viruses can wreak havoc to the operations of the computer It
is important that you scan your computer for viruses once in
a while, so that you can be sure about its protection.
There are various types of computer viruses, classified in
terms of techniques, origin, types of files affected, damage,
OS or Platform attacked, as well as the places they hide. Some
of the common types include the following:
1. Macro viruses
2. Directory viruses
3. Boot viruses
4. File infectors
5. Direct action viruses
6. Overwrite viruses
7. Resident viruses
Below are the effects of some of these viruses
1. Macro virus; this virus affects files created using
particular programs or applications containing macros.
The mini-programs increase their ability to automate
some operations, in which case they would be
performed as single actions. The user would therefore
be saved the trouble of executing them singularly.
2. Resident viruses: These are permanent viruses dwelling
in RAM memory. In this case, they would be in a
position to overcome, as well as interrupt, all operations
that the system executes. Their effects include
corrupting programs and files that are closed, opened,
renamed or copied.
3. Overwrite viruses: These viruses delete information that
is in the infected files. In this case, the infected files
would be rendered totally or partially useless.
Unfortunately, you would only clean the infected file by
deleting it completely, therefore losing original content.
4. Boot viruses: This virus infects the hard disk’s or floppy
drive’s boot sector. This would make the computer
unable to boot. These viruses can, however, be avoided
by ensuring that the floppy disks and hard drive is well
protected. Never start the computer using an unknown
disk drive or floppy disk.
5. File infectors: This virus infects executable files or
programs. On running the programs, the virus would be
activated, then be able to carry out its damaging effects.
Most of the existing viruses are in this category.