A01 chaf6542 06 se fm indd

1 

Authentication – are parties to the transaction who they claim to be (risk (c) above)?

2 

Privacy and confidentiality – are transaction data protected? The consumer may want 

to make an anonymous purchase. Are all  non-  essential traces of a transaction removed 

from the public network and all intermediary records eliminated (risks (b) and (c) 

above)?

3 

Integrity – checks that the message sent is complete, i.e. that it is not corrupted.

4 

 Non-  repudiability – ensures sender cannot deny sending message.

Firewall

A specialised software 

application typically 

mounted on a server 

at the point where the 

company is connected to 

the Internet. Its purpose 

is to prevent unauthorised 

access into the company.

Ethical hacker

Hacker employed 

legitimately to test the 

quality of system security.

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