U.S. Department of Justice United States Attorney Southern District of New York The Silvio J. Mollo Building One Saint Andrew} Plaza New York New York 10007 December 19, 2018 BY EMAIL Microsoft Corporation Attn: I.Se ent To whom it may concern: Please be advised that the accompanying grand jury subpoena has been issued in connection with an official criminal investigation of a suspected felony being conducted by a federal grand jury. Pursuant to the accompanying non-disclosure order issued under 18 U.S.C. § 2705(b), you are prohibited from notifying any subscriber or other third-party of the existence of this subpoena for a period of 180 days from the date of the order. If you ever plan to notify the relevant subscriber(s) of the existence of this subpoena, even after the 180-day period, please advise me before you do so, in case the investigation remains ongoing and the order needs to be renewed. You are hereby directed to preserve, under the provisions of 18 U.S.C. § 2703(0(1) any and all information, including, if applicable, all emails/attachments or other content information, as well as any backup copies of such data or data designated for deletion, pertaining to the domain(s) and account(s) referenced in the accompanying subpoena, for a period of 90 days. This letter applies only retrospectively; it does not obligate you to capture and preserve new information that arises after the date of this letter. Thank you for your cooperation in this matter. Sincerely, GEOFFREY S. BERMAN United States Attorney By: EFTA00152138