That's a guess from Troy at this point, he also points out that there may be expats. It should be easy enough to define some statistical tests on the ID numbers

That's a guess from Troy at this point, he also points out that there may be expats. It should be easy enough to define some statistical tests on the ID numbers and dead/alive status to see if they fit the demographics of the SA as of 2015. Also, the SA population pyramid has, for example, a bulge in the 25-29 group...the breached ID numbers should reflect those trends, rather than being uniformly distributed. Also, remember that a big percentage of South Africans are poor, and likely to not appear in any databases except for Home Affairs itself, so unless that's the source of the breach I doubt there are any other DBs with even close to that number of ID numbers.