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Infotech. Unit 19 INTERNET SECURITY. Prepared by: JAWEED AHMED KHAN. Security and Privacy on the internet. Hackers Be Careful. Hacker. a person who secretly finds a way of looking at and/or changing information on sb else's computer system without permission .

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Infotech

Infotech

Unit 19

INTERNET SECURITY

Prepared by: JAWEED AHMED KHAN



Hackers be careful
Hackers Be Careful


Hacker
Hacker

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




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.


For online banking

Make sure banks provide digital certificates.

Use a browser that is compliant with SSL(Secure Sockets layer)


Email Privacy

Put it in virtual envelope- encode it with encryption.

Use the freeware invented by Phil Zimmerman called PRETTY GOOD PRIVACY.





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

Encryption

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


Converts encrypted data back into its original form

Decryption

Converts encrypted data back into its original form.



Malware are malicious software designed to damage your computer .

Example:-

Viruses, Trojans, Worms, Spyware.


  • A virus can enter PC via infected discs or internet. computer .

  • 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.



Don’t open e-mail from strangers. computer .

Take care when downloading files.

Update your anti – virus.


Note computer .


Thank you
Thank You computer .


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