Texas Code of Criminal Procedure - CRIM P Art. § 18B.551. Cause of Action

(a) Except as provided by Article 18B.552, a provider of an electronic communications service or a provider of a remote computing service, or a subscriber or customer of that service provider, that is aggrieved by a violation of this chapter has a civil cause of action if the conduct constituting the violation was committed knowingly or intentionally and is entitled to:

(b) The reliance in good faith on a court order, warrant, subpoena, or legislative authorization is a complete defense to any civil action brought under this chapter.

(c) A civil action under this article may be presented not later than the second anniversary of the date the claimant first discovered or had reasonable opportunity to discover the violation.