Viruses. Learning Objectives: At the end of this lesson you should be able to:
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Transcript of Viruses. Learning Objectives: At the end of this lesson you should be able to:
Viruses
Learning Objectives:
At the end of this lesson you should be able to:
Learning Objectives:
At the end of this lesson you should be able to:
describe what a computer virus is;
Learning Objectives:
At the end of this lesson you should be able to:
describe what a computer virus is;
explain the measures which must be taken in order to protect against viruses;
What is a Virus?
What is a Virus?
1. it is a program
What is a Virus?
1. it is a program
2. it makes copies of itself
What is a Virus?
1. it is a program,
2. it makes copies of itself,
3. it causes damage.
How do you get viruses?A virus can be introduced into your computer from:
How do you get viruses?A virus can be introduced into your computer from:
• a floppy disk, CDROM, memory stick … ,
How do you get viruses?A virus can be introduced into your computer from:
• a floppy disk, CDROM, memory stick … ,
• email attachment,
How do you get viruses?A virus can be introduced into your computer from:
• a floppy disk, CDROM, memory stick … ,
• email attachment,
• Internet websites.
What happens when you get viruses?
If your computer gets infected by a virus it can:
What happens when you get viruses?
If your computer gets infected by a virus it can:
• spread to other programs on your hard disk,
What happens when you get viruses?
If your computer gets infected by a virus it can:
• spread to other programs on your hard disk,
• copy itself onto floppy disks or memory sticks,
What happens when you get viruses?
If your computer gets infected by a virus it can:
• spread to other programs on your hard disk,
• copy itself onto floppy disks or memory sticks,
• email itself to all the contacts in your address book.
Why should I worry?
If your computer gets infected by a virus it can:
Why should I worry?
If your computer gets infected by a virus it can:
• damage your programs so they won’t run,
Why should I worry?
If your computer gets infected by a virus it can:
• damage your programs so they won’t run,
• stop your computer working completely,
Why should I worry?
If your computer gets infected by a virus it can:
• damage your programs so they won’t run,
• stop your computer working completely,
• delete or corrupt data on your computer,
Why should I worry?
If your computer gets infected by a virus it can:
• damage your programs so they won’t run,
• stop your computer working completely,
• delete or corrupt data on your computer,
• infect your friends computers too.
What can I do to protect myself?
What can I do to protect myself?
1. Install anti-virus software– this will detect and destroys viruses
– important to have regular updates to deal with new viruses.
What can I do to protect myself?
1. Install anti-virus software– this will detect and destroys viruses
– important to have regular updates to deal with new viruses.
2. Never open an unexpected email attachment – unless it is from someone you trust,
What can I do to protect myself?
1. Install anti-virus software– this will detect and destroys viruses
– important to have regular updates to deal with new viruses.
2. Never open an unexpected email attachment – unless it is from someone you trust,
3. Don’t use memory sticks or disks that are not yours– unless you virus check then first
What can I do to protect myself?
1. Install anti-virus software– this will detect and destroys viruses
– important to have regular updates to deal with new viruses.
2. Never open an unexpected email attachment – unless it is from someone you trust,
3. Don’t use memory sticks or disks that are not yours– unless you virus check then first
4. Be careful when visiting new websites– many websites can to trick you into downloading viruses
Things to do:• Log on• Select Internet Explorer• Select ICT from the Subject Index menu• Click on this link:
ICT Short course GCSE Revision Notes• Add this page to your Favourites is you haven’t already• Scroll to the bottom of the page and click on this link:
3. describe what a computer virus is • Copy & Paste the questions into a new Word document• Type your Answers to the questions• Save your answers in your home area as Viruses
