4. • The first computer virus was
called “Creeper.”It was
invented in the early
1970’s.Since then, millions of
viruses have been invented.
• The first known computer
virus was written in 1981 by a
man named Rich Skrenta . This
virus was termed Elk Cloner,
and was the first computer
virus to appear outside the
computer where it was
created in.
6. • A Computer Virus is a
program that can copy itself
and infect a computer
without the permission or
knowledge of the user.
• A Computer Virus has 2
major characteristics: the
ability to replicate itself, and
the ability to attach itself to
another computer file...
7. The following are a few Symptoms that your
computer might have a virus:
• Slow response and slow program execution.
• Random hard drive crashes and restarts.
• Distorted graphics and text.
• Files that have mysteriously vanished.
• Extensive pop-up ads.
• Inability to open files with existing passwords.
11. Alters the search and
error page of a
browser and redirects
the user to its own
page.
12. •They load with the host program into
computer’s memory.
•They can be crafted with relative ease.
13. File Infector Virus
A file infector is a virus that infects an
executable file.
Typically affects only one type of file.
14. Macro Virus
• These type of virus infects word , excel,
PowerPoint, access and other data files.
Once infected repairing of these files is
very much difficult.
16. • A virus that can
encrypt its code in
different ways so
that it appears
differently in each
infection. These
viruses are more
difficult to detect.
17. •
•
•
•
Hides within the computers memory.
It activates whenever the OS loads or operates.
This virus may be pernicious.
It is of 2 types:
Fast Infector.
Slow Infector.
• Removal of this virus is bit tricky.
• It may be designed to block the actions of Anti
Virus programs.
18. There are few website that execute complex
code with the purpose to provide interesting
content ,these codes often get exploited and
due to this a virus becomes able to infect a
machine and to take actions on a machine via
website. This particular virus is called web
scripting virus
19.
20.
21. Infects computers running with
Microsoft Windows.
Discovered by IT security firm Seculert,
in December 2012.
Steals confidential data of the user.
Affects POS i.e. Point of sales.
Detected in online banking transaction
space on 19 January 2014 in India.
22.
23. In 2012, a major ransom ware worm known as
Reveton began to spread.
A Reveton is a malware which attempts to
extort money from a user.
It claims that your computer has been used for
unauthorized activities.
24.
25.
26. Encrypting ransom ware appeared in 2013 with
a worm known as "Crypto Locker”.
It gets Distributed either as an attachment to a
malicious e-mail or as a drive-by download.
CryptoLocker demands a payment with either a
MoneyPak card or Bitcoin to recover the key.
CryptoLocker to be extremely difficult to repair.
