A system and method are disclosed that separate control functionality from the management functionality for conducting electronic transactions. The control functions are performed by a third party resulting in a low overhead since significant overhead is incurred in response to an anomalous event, thus facilitating high throughput electronic transactions when anomalous events are infrequent. Further, the third party does not need to have access to confidential information since it only controls by observing, validating and certifying the observed communications in a specified manner to prevent confidential information from leaving the context of the transaction. Management of the transactions based on consideration of substantive information is provided by the participants. A preferred system of the invention comprises a validation authority, a logical boundary at which validation authority undertakes control of communications, and validation rules specifying parameters for observation and the nature of comparisons.