Integrity – enclose information in a digital envelope so that the computer can automatically detect messages that have been altered in transit.

Availability – provide delivery assurance for each message segment so that messages or message segments cannot be lost undetectable.

Key Management – provide secure distribution and management of keys needed to provide secure communications

Nonrepudiation – provide undeniable, end-to-end proof of each message’s origin and recipient

Authentication – security identify clients and servers with digital signature and certificate

 

6 dimensions of e-commerce security 

1.     Integrity: prevention against unauthorized data modification

2.     Nonrepudiation: prevention against any one party from reneging on an agreement after the fact

3.     Authenticity: authentication of data source

4.     Confidentiality: protection against unauthorized data disclosure

5.     Privacy: provision of data control and disclosure

6.     Availability: prevention against data delays or removal 
 

For example, if an unauthorized person intercepts and changes the contents of an online communication, such as by redirection a bank transfer into a different account then it was intended, the integrity of the message has been compromised.