Texas Code of Criminal Procedure - CRIM P Art. § 18B.501. Preclusion of Notification

(a) An authorized peace officer seeking electronic customer data under Article 18B.351 may apply to the court for an order commanding the service provider to whom a warrant, subpoena, or court order is directed not to disclose to any person the existence of the warrant, subpoena, or court order. The order is effective for the period the court considers appropriate.

(b) The court shall enter the order if the court determines that there is reason to believe that notification of the existence of the warrant, subpoena, or court order will have an adverse result.

(c) In this article, an “adverse result” means: