Take a tour around my slideshow to learn more
about viruses.
What is
a virus?
The
history
of the
virus
How big is
the
problem?
How do
you get
rid of
viruses
How it
effects
society?
What do
different
viruses
do?
How do
viruses
spread
A virus is a man-made internet program which
was made to cause harm on personal computers
and computer networks. Viruses can replicate
themselves and can infect other computers and
even pass security systems.
•Viruses first started when people played games
against each other and wrote viruses to try and
infect the other person. In 1949 self-replicating
programs started.
•In 1981 some of the first viruses started
spreading through apple computers.
•In 1983 Fred Cohen discovered that viruses can selfreplicate and spread to other computers.
• In 1986 viruses could infect certain types of floppy
discs.
• In 1987 the Lehigh file virus infected command.com
files.
•In 1988 the Jerusalem virus effects .com and exe files
and deletes any program run on that day.
•In 1990 one of the first Norton anti-virus programs came
out.
•In 1991 the Tequila virus was the first virus to go world
wide which made virus scanners hard to detect.
•In 1992 there were 1300 viruses 420% more than in
1990. A virus making kit was invented.
•In 1994 the Good time email sent to people if you
opened the email it could get rid of everything on your
hard drive and does this every 6 to 12 months.
•In 1999 the Melissa virus was invented. It attaches itself
to emails and sends itself to about 50 people in your
contact list. This virus spread faster than any other virus
that had been made it was sent to approx 1 million
people. Bubble Boy was the first worm made. You get it
by opening an email.
•In 2000 the ILOVEYOU virus was sent out. It is like
the Melissa virus. It deletes stuff on your hard drive
and can sent itself to other computers. I could also
give personal details to the person who made it.
•In 2001 the Nimda virus was made. It infected
hundreds of thousands computers and was one of the
most sophisticated viruses made. It hade 5 different
methods of replicating itself and infecting other
computers.
Viruses are a big problem. If you don’t have
an anit-virus detector, it will be certain that
you will have a virus on your computer. There
are over 10,000 different viruses today which
can effect your computer in different ways.
Viruses effect society because if a virus has eaten away
through all your documents and the computer keeps
crashing and there is nothing they can do except pay
lots of money to get it fixed it would add to the same
amount as buying a new computer. So either way they
have to pay for a new computer which is a nuisance. It
also effects society because important documents that
can never come back can be destroyed and as soon as
they put it on the computer with a virus there would be
no point on putting it on a CD or floppy disc because
you would just put the virus on the floppy/CD that will
then be injected into your new computer.
There are many types of viruses that do different things.
Some viruses may just sit on your computer until a certain
date then it will start deleting files and crash your
computer. Other viruses such as Trojan horses can work
while playing a game but it can’t automatically replicate
itself. Some viruses can send your personal details to the
creator of that virus
There are different ways viruses can spread. Viruses
such as the worm can self-replicate and send itself to
50 people’s computers on your email list. Other
viruses can attach itself to your emails which will send
to the persons computer. People write advertisements
saying you have won 1 million dollars and if you click
on the advertisement you can get a virus. Some
viruses can be spread by putting a file on a disc with a
virus and putting it on another computer.
If you have a virus on your computer and you want to
get rid of it get an anti-virus software to get rid of any
viruses on your computer that you have got from
downloading things off the net or from other
computers. You would have to use this software at
least once everyday or viruses could be eating away.