US Patent 10192072 Protecting sensitive data

Various examples described herein are directed to systems and methods for securing data. A security system may receive a first record comprising a plurality of record fields, where the plurality of record fields includes a first record field and the first record field includes a first record field data. The security system may access a source setup record corresponding to the first record from a source setup table and determine that the source setup record comprises data referencing the first record field. The security system may access first token data corresponding to the first record field data and replace the first record field data at the first record field with the first token data. The security system may store the first token data at a token table and writing the first token data to the first record field to replace the first record field data.