1. A method for facilitating testing of an insecure computing environment, comprising: obtaining a real data set comprising a set of data strings; determining, by one or more computer systems, a set of frequency distributions associated with the set of data strings; generating, by the one or more computer systems, a test data set from the real data set, wherein the test data set comprises a set of random data strings that conforms to the set of frequency distributions; and testing the insecure computing environment using the test data set.