In response to reports that the LGBTQ dating app Grindr shared information about users’ HIV statuses with third parties, Senators Edward J. Markey (D-Mass.) and Richard Blumenthal (D-Conn.), members of the Senate Commerce, Science, and Transportation Committee, have sent a letter to the CEOs of Grindr and third parties Apptimize and Localytics, inquiring about their policies for protecting the sensitive information of Grindr’s millions of users.