Safety and Security

1. ICT IGCSE Theory – Revision Presentation
2015 – 2016 Questions (New Syllabus)
Chapter
8
-
Safety
and
Security
Describe four strategies that you could use to minimise the dangers of using social
networking sites to make new friends.
• Know how to block and report unwanted users,
• Never arrange to meet anyone alone
• Always tell an adult first when arranging to meet someone
• Always meet in a public place
• Avoid inappropriate disclosure of personal data/set privacy settings/Avoid giving
email address or phone number when chatting
• Avoid inappropriate disclosure of your own name/Avoid giving your full name
• Avoid giving your address
• Avoid giving your school name or displaying a picture in school uniform
• Do not display pictures taken at home/Do not display pictures taken of the school
with the name attached/Do not send pictures/videos of yourself to strangers
• Ensure that the person you are befriending has very secure privacy settings
• Check profiles before contacting people
• Verify person’s contact details with other trusted people/friends

2. ICT IGCSE Theory – Revision Presentation
2015 – 2016 Questions (New Syllabus)
Chapter
8
-
Safety
and
Security
Explain why encryption is needed when transmitting data.
• To cause data to be scrambled/encoded
• Protects sensitive data…
• …from being understood if it falls in to the wrong hands
• Only user/computer with key can understand data
There are many safety issues associated with the use of computers. Describe three
of these issues.
• Electrocution by touching loose/bare wires/spilling liquids on electrical contacts
• Tripping and falling over trailing wires or cables
• Physical injury to feet/legs, etc. caused by heavy equipment falling
• Fire caused by too many plugs in multisocket and thereby
overheating/overheating of equipment

3. ICT IGCSE Theory – Revision Presentation
2015 – 2016 Questions (New Syllabus)
Chapter
8
-
Safety
and
Security
There are many health issues associated with the use of computers.
Name three of these health issues and for each one describe, in detail, a different
cause.
• Headaches/eyestrain
• From staring at screen continuously
• RSI in fingers
• From continual typing/repetitive clicking of mouse
• RSI in wrists
• From repetitive clicking of mouse/continual typing
• Backache
• From sitting in same position all day

4. ICT IGCSE Theory – Revision Presentation
2015 – 2016 Questions (New Syllabus)
Chapter
8
-
Safety
and
Security
• The action of sending emails to fraudulently obtain another person’s bank
details is called Phishing
• The action of illegally installing malicious code which redirects a person to a
fraudulent website with the purpose of obtaining that person’s bank details is
called Pharming
• Unsolicited bulk emails are called Spam
• The action of sending text messages to fraudulently obtain another person’s
bank details is called Smishing
• An internet protocol for delivering private messages using cryptography is called
https/SSL/TLS
• An attachment to an electronic message used to verify the identity of the sender
is called a digital certificate

5. ICT IGCSE Theory – Revision Presentation
2015 – 2016 Questions (New Syllabus)
Chapter
8
-
Safety
and
Security
Describe four methods you could use to minimise the likelihood of receiving spam
emails.
• Use a spam filter/anti-spam software
• Do not reply to spam/suspicious messages
• Do not click on any links/attachments in a spam/suspicious message
• Use a disposable email address
• Use a complex email user name
• Do not give out your email address online/do not register using email on
untrusted websites/opt
• out of marketing
• Read messages as text
• Do not use your email address as an online username
• Changing to an email provider who filter spam