5.5 Digital security

5.5 Digital security

1. Anti-virus and anti-spyware are both programs that protect the computer system from other programs which are maliciously downloaded. Anti-virus means that the software identifies and quarantines or destroys computer viruses. Anti-spyware carries out a similar role with spyware.

2. Usernames and passwords provide protection at two levels.

3. Firewalls are used to prevent unauthorised access to or from a network. They can be implemented via hardware, software or both

4. Permissions- rules that determine who can access an object and what they can do with it.

5. Encryption is when data is encoded(converted into a coded format), so that it cannot be understood by people who are not authorised to see it.