The owner of a trade secret is presumed to make a reasonable effort to maintain its secrecy if the word ‘Confidential’ or ‘Private’ or another indication of secrecy is placed in a reasonably noticeable manner on any medium or container that describes or includes any portion of the trade secret. This presumption may be rebutted only by clear and convincing evidence that the owner did not take reasonable efforts to maintain the secrecy of the trade secret.