professor kogan's transfer and now potentially do you believe view. do you know of any instances where user data was improperly transferred to third party in breach of facebook's terms? if so, how many times has that happened and was facebook only made aware of that transfer by some third party? >> mr. chairman, thank you. as i mentioned, we're now conducting a full investigation into every single app. that had an access to a large amount of information before we locked down platform to prevent developer from accessing this information around 2014. we believe that we're going to be investigating many apps. tens of thousands of apps. if we find any suspicious activity, we're going to conduct a full audit of those app.s to understand how they are using their data and if they are doing anything improper. if we find they are doing anything improper we will ban them from facebook and tell everyone affected. as for past activity, i don't have all the examples of apps that we have...