Unit 3 LO1

Unit 3 LO1

1. integrity

   • A person who can not be trusted has no integrity, you can not trust them.
   • Data that has been changed does not have integrity, you can not trust it.

2. Protection

   • Encryption – video subtitles If you want to send digital information securely you have to be careful.
   • The Caesar cypher is one way of doing this.
   • Examples of Protection

3. Firewalls

   • Firewalls can be hardware or software
   • Disadvantages are that it sometimes blocks things you need.
   • Advantage: Can protect the company from external network attacks.

4. Access Levels

   • The more people have access to sensitive parts of the network, the more likely it is that a hacker or a virus might be able to cause damage.
   • You can set user access levels on your home computer. For example, a parent may prevent a child from being able to install software.

5. Network Policies

   • Network policies provide rules and guidelines on what network users can and cannot do.
   • Most networks in large organisations will have network policies in place.