The new subpoena is another indication of how Zatko’s allegations could affect the case. In addition to the deposition, Musk’s team also requested in Thursday’s subpoena “books, documents or tangible things in your possession” regarding Twitter’s counting of spam and fake accounts and its use of mDAU as a key metric. “Mr. Zatko will comply with his legal obligations on this subpoena and his appearance at the deposition is involuntary,” Zatko’s attorneys, Debra Katz and Alexis Ronikher, said in a statement Monday. “He did not make his whistleblower disclosures to the appropriate government agencies to benefit Musk or harm Twitter, but rather to protect the American public and Twitter shareholders.” Zatko is also scheduled to testify about his allegations at a Senate Judiciary Committee hearing on September 13.