QBW Password by Thegrideon Software is advanced QuickBooks security audit and cleanup tool.
QBW Password scans for mishandled (accessible without proper access) sensitive data (CCs, SSNs, Tax IDs, SINs, Bank details, etc) and encryption keys, displays it (only partially, of course) and can cleanup records compromising data security. Full scan in available in trial version, so it is easy to check if you have exposed sensitive data violating PCI DSS compliance and cleanup is necessary. Preview of the data left in a file "empty space" is available as well.
QBW Password works with all editions (US, CA, UK) and version including QB 2016. It is the first tool to perform deep security scan and cleanup for .qbw / .qba company files.