1. Unit 19 INTERNET SECURITY
Infotech
Unit 19
INTERNET SECURITY
Prepared by: JAWEED AHMED KHAN

2. Security and Privacy on the internet

3. Hackers Be Careful

4. Hacker
a person who secretly finds a way of looking at and/or changing information on sb else's computer system without permission

5. How to make safe transactions?

6. Security on the web

7. RELAX Set all security alerts to high on your web browser.
Use the browsers that displays lock sign on the website and enables you to delete cookies.

8. For online banking
Make sure banks provide digital certificates.
Use a browser that is compliant with SSL(Secure Sockets layer)

9. Email Privacy Put it in virtual envelope- encode it with encryption.
Use the freeware invented by Phil Zimmerman called PRETTY GOOD PRIVACY.

10. Phil Zimmerman

11. NETWORK SECURITY

12. Methods of Protection
Passwords
Firewalls
Encryption
Decryption

13. Encryption
Changes data into a secret code so that someone with a key can read it.

14. Converts encrypted data back into its original form.
Decryption
Converts encrypted data back into its original form.

15. Malware Protection

16. Malware are malicious software designed to damage your computer .
Example:-
Viruses, Trojans, Worms, Spyware.

17. A virus can enter PC via infected discs or internet.
A worm spreads through e- mail attachments.
A Trojan horse is disguised as useful program but may attack data security.
Spyware and adware collect information from your PC. They come with ads and free downloads.

18. So, If You want to protect your PC

19. Don’t open e-mail from strangers.
Take care when downloading files.
Update your anti – virus.

20. Note
Hackers = white hats
Crackers = black hats

21. Thank You