1. A system for secure data exchange and data tampering prevention, the system comprising: a secure data system configured to receive a plural number of electronic data files from a respective plurality of data entities via secure communication over a network, and store the received electronic data files in a first storage of the secure data system, each electronic data file comprising data values comprising tradable quote data, each data value of the data values associated with a timestamp and collected by the respective plurality of data entities during a first time period, wherein at least one of the data values violate a predetermined threshold, wherein at least a second of the data values is manipulated during the first time period by the respective data entity to artificially influence a benchmark data value; and a benchmark data generator system communicatively coupled to the secure data system, the benchmark data generator system comprising: a randomized snapshot generator that determines, after the first time period, a plural number of randomized snapshot times, evaluates the determined snapshot times and timestamps of the each data value to identify a portion of the data values that correspond to the determined plural number of randomized snapshot times, wherein the respective plurality of data entities are hindered from predicting the determined plural number of randomized snapshot times during the first time period, whereby the artificial influence is thwarted when the at least second of the data values that is manipulated are excluded from the portion in response to the evaluation; plural second storage corresponding to the plural number of randomized snapshot times; a synthetic data generator configured to: a) create a data mapping between the first storage and the plural second storage, based on the randomized snapshot times and the timestamps and b) selectively transfer the portion of the data values in each electronic data file from the first storage to the plural second storage according to the data mapping, such that each second storage stores corresponding samples synthesized from the respective plurality of data entities associated with a single respective randomized snapshot time, the selectively transferred samples including the at least one of the data values that violate the predetermined threshold; a check module configured to identify one or more of the selectively transferred samples that includes the at least one of the data values that violate the predetermined threshold, the check module discarding said identified samples; and a benchmark calculator configured to determine the benchmark data value for a data environment comprising the plurality of data entities, based on the synthetized samples stored in the plural second storage.