New York Consolidated Laws, Criminal Procedure Law - CPL § 250.30 Notice of defenses in offenses involving computers

1. In any prosecution in which the defendant seeks to invoke any of the defenses specified in section 156.50 of the penal law, the defendant must within forty-five days after arraignment and not less than twenty days before the commencement of the trial serve upon the people and file with the court a written notice of his intention to present such defense.  For good cause shown, the court may extend the period for service of the notice.

2. The notice served must specify the subdivision or subdivisions upon which the defendant relies and must also state the reasonable grounds that led the defendant to believe that he had the authorization required by the statute or the right required by the statute to engage in such conduct.

3. If at the trial the defendant seeks to invoke any of the defenses specified in section 156.50 of the penal law without having served the notice as required, or seeks to invoke a subdivision or a ground not specified in the notice, the court may exclude any testimony or evidence in regard to the defense, or any subdivision or ground, not noticed.  The court may in its discretion, for good cause shown, receive such testimony or evidence, but before doing so, it may, upon application of the people, grant an adjournment.