Maybe the OPM data breach [1] started earlier (2010) than claimed (2014). It was detected in April 2015 and said to have started just one year earlier, with some uncertainty.<p>[1] <a href="https://en.wikipedia.org/wiki/Office_of_Personnel_Management_data_breach" rel="nofollow">https://en.wikipedia.org/wiki/Office_of_Personnel_Management...</a>