A process of information leakage prevention for sensitive information in a database table. Content to be inspected is extracted at a deployment point. The content is processed by a first fingerprinting module to determine if the content matches fingerprint signatures generated from database cells between a first threshold size and a second threshold size which is larger than the first threshold size. The content is also processed by a second fingerprinting module to determine if the content matches fingerprint signatures generated from database cells larger than the second threshold size. The content may also be filtered, and the filtered content processed with an exact match module to determine if the filtered content exactly matches data from cells smaller than the first threshold size. Other embodiments, aspects and features are also disclosed.