There are not too many mentally-sharp, fully-employed, terminally-ill people that I have met. Even fewer at tech companies.
And even fewer who are single and childless. (Google would likely go after the estate of anyone who did this.)
But the one would be enough, especially in large organization. Surely they would need access to the exact data too.
I wonder how hard they would press an estate. It’s bad PR to go after widows and surviving children, and the data has already escaped.
This is something they’d want to settle quietly, so the family would have leverage.