N.Y. PEN. LAW § 40.05 : NY Code - Section 40.05: Entrapment

In  any  prosecution for an offense, it is an affirmative defense that
  the defendant engaged in the proscribed conduct because he  was  induced
  or  encouraged  to  do  so by a public servant, or by a person acting in
  cooperation with a public servant, seeking to  obtain  evidence  against
  him  for  purpose  of criminal prosecution, and when the methods used to
  obtain such evidence were such as to create a substantial risk that  the
  offense  would be committed by a person not otherwise disposed to commit
  it. Inducement or  encouragement  to  commit  an  offense  means  active
  inducement  or  encouragement.  Conduct  merely  affording  a  person an
  opportunity to commit an offense does not constitute entrapment.