using computers safely and avoiding viruses

Using ComputersUsing Computers

Computers are in Danger !

These can hurt our computers:

o Virus ( Trojan, Worm )

o Malware ( Adware, Spyware )

Computer Viruses

They hidehide inside files

They copy

They spread

You have to let them in

Where Do They Come From ?

Everywhere!

Flash Drives

Disks

Other computers

Cameras

ipods and mp3 players

Where Do They Come From ?

Email

Websites

Skype,

Chat (MSN, Yahoo)

Phones

Everywhere!

How to Not Get a Virus

Humans get viruses

o HIV is a human virus

How do you not get HIV?

1. Always use condom

2. Always know your partner

How to Not Get a Virus

1. Always use a condom - antivirus Always update the antivirus

2. Know your partner Don’t bring in disks from outside Don’t open unknown email files Don’t accept files from strangers Don’t visit strange websites

YOU Let Viruses In !

YOU Let Viruses In !

When you let a virus into HU:

o You lose work time

o Other people waste time

o Computers are not available

Web

Most websites that you use for work are safe (Yahoo, Google, NGOs)

Porn and ‘entertainment’ sites are dangerous

Never download or say “yes” to anything if you don’t know

Web

Any prompt - click “Cancel” or “No”

Unless you really know what it isUnless you really know what it is

Email and Chat

If you get anything from a person you don’t know – look out!

Any file comes to you – don’t accept unless you are very sure it is safe

Emails with odd things – ‘you won’, ‘we have money for..’, ‘warning..’ – Delete

Fully delete – press Shift + Delete, gone and not in recycle bin

File Transfer Check: o The person

o The file type

o The name

One Push Can Cost: + $ $

Flash Drives

Never bring an outside Flash drive to work

Never take an HU flash drive outside

If you put any flash drive in a computer scan it with anti virus

Other Memory

Anything can carry viruses

Camera flash memory (SD Card, XD, Compact Flash,

Memory Stick)

iPod, mp3 player

Telephone with 3G

Run Virus Scan

Anti Virus

ALWAYS keep up to date

Run a check FIRST on any disk or flash drive before you access it

If you get a virus warning DELETE

Anti Virus Warning

Some programs have a button

“Ignore”

NEVERNEVER ‘IGNORE’ ‘IGNORE’

Anti Virus Warning

Anti Virus

A virus is usually a file.

It can be inside a file that you want to save, maybe a Word document (.doc).

If this is so you can clean or repair it.

If it can’t be cleaned and you want to get help, quarantine it. (“Move to Chest”, “Move to Virus Vault”

If you are not sure get help or DELETE

I Found a Virus

Where did it come from?

Go back to the person who had it

Clean all HU computers

Never share anything until you are sure you have cleaned it

Remember…Remember…

You are responsibleYou are responsible

Always get helpAlways get help

ThankyouThankyou

ហាកនហាកន

Produced by Tony HobbsHealth Unlimited,

Ratanakiri, Cambodia

www.healthunlimited.org

With the support of Australian Volunteers International

www.australianvolunteers.com

© 2009 HU. Use with Acknowledgement