Josh Uretsky, the former Sanders campaign’s National Data Director, was interviewed by CNN this morning. This is what he had to say:
"We knew there was a security breach in the data, and we were just trying to understand it and what was happening."
[…]
"To the best of my knowledge, nobody took anything that would have given the (Sanders) campaign any benefit."
Uretsky is an experienced administrator of the NGP-VAN system that is used by the DNC. He said the campaign noticed the problem Wednesday morning.