mark: one called yunoya. there may have been a couple others as well. senator baldwin: i appreciate that. how much do you know or have you tried to find out how cambridge analytica used the data, how they had it before you believe they deleted it? mark: since we just heard they did not delete it, we kicked off an internal investigation. the investigation is still underway. we can come back to you with the results once we have that. senator baldwin: i will switch to my home state of wisconsin. according to press reports, my home state of wisconsin was a major target of russian bought ads the 2016 election. number of very polarizing issues. they similarly targeted division anding dissent in the wake of a police shooting in milwaukee's sherman park neighborhood. i find some encouragement in the steps you have outlined today to provide greater transparency regarding political ads. are you confident you have excluded entities based on -- outside the united states. mark: we will follow up on that. senator baldwin: on that topic, ofyou require disclosure that