V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DPA
       Distributed Password Authentication


The Free On-line Dictionary of Computing (30 December 2018):

Data Protection Act
DPA

    (DPA) A UK law guaranteeing rights to individuals in
   relation to personal data that others hold on them.  For
   example, under the DPA, you have the right to see what data a
   company holds on you.

   (2007-06-17)