Computer Firewall ,ad ware,spyware,removers and anti viruses

1. Presentation
Personal Firewalls
Spyware and Adware Removers
Anti Viruses
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Presented By:
Adeel Khurram
Supervised By:
Engr.Zahra Noor
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2. What is Personal FireWalls?
A personal firewall is a utility that detects and
protects a personal computer from unauthorized
disturbance. Personal firewalls constantly
monitor all transmissions to and from a
computer. When connected to the Internet, your
computer is open to attacks from a hacker .
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3. INTERNET
Firewall
My
PC
Secure
Private
Network
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4. Who are Hackers?
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Hacker
A hacker is someone who tries to access a
computer or network illegally.
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5. Operating systems often include a personal
firewall. Windows automatically enables its
built-in personal firewall, called Windows
Firewall, upon installation of the operating
system. If your operating system does not
include a personal firewall or you want
additional protection, you can purchase a
stand-alone personal firewall utility
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Continue…..
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6. What is an Anti Virus?
• An antivirus program protects a computer
against viruses by identifying and removing
any computer viruses found in memory, on
storage media, or on incoming files. Most
antivirus programs also protect against worms
and Trojan horses. When you purchase a new
computer, it often includes antivirus software.
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7. Most Famous Anti viruses
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8. What is a Virus ?
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9. • The term, computer virus, describes a
potentially damaging computer program that
affects, or infects, a computer negatively by
altering the way the computer works without
the user’s knowledge or permission. Once the
virus is in a computer, it can spread
throughout and may damage your files and
operating system.
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Virus…..
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10. • Viruses are just one type of malicious
software. Malware (short for malicious
software) is software that acts without a
user’s knowledge and deliberately
alters the computer’s operations. In addition
to viruses, worms and Trojan horses are
malware.
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11. Worms And Trojan Horse
• A worm, such as Sasser or Klez, copies itself
repeatedly, for example, in memory or over a
network, using up system resources and
possibly shutting down the system.
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12. Worms And Trojan Horse
• Trojan HorseTrojan horse (named after the Greek
myth) hides within or looks like a genuine
program such as a screen saver. A certain
condition or action usually start the Trojan
horse. Unlike a virus or worm, a Trojan horse
does not reproduce itself to other computers.
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13. Spyware and Adware Remover
• A spyware remover is a program
that detects and deletes spyware
and other similar programs.
• An adware remover is a program
that detects and deletes adware.
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14. Spyware and Adware Remover
• Spyware is a program placed on a computer
without the user’s knowledge that secretly collects
information about the user, often related toWeb
browsing habits. Spyware can enter a computer as a
virus or as a result of a user installing a new
program.
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15. Spyware and Adware Remover
• Adware is a program that displays an online
advertisement in a banner or pop-up window
on Web pages, e-mail, or other Internet
services. Sometimes, spyware is hidden in
adware.
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