Acceptor
Access point
Access right
Accounting Centre
Accounting transaction
Acknowledgement
Algorithm
Approval
Archiving
Assessment
Evaluation
Asymmetric algorithm
ATM card
ATM withdrawal
Attack
Audit trail
Authentication
Authorisation
Authorisation request
Automated clearing house (ACH)
Automated teller machine (ATM)
Availability

Audit trail

Set of data relative to the operations of a system allowing for the reconstruction and verification of the sequence of events having led to a given result.