California , Connecticut , Delaware , Florida , Illinois , Maryland , Massachusetts , Michigan , Montana , New Hampshire , Pennsylvania , and Washington .
Civil action is authorized.
The State prohibits the recording of private telephone conversation and by its terms is limited to oral telephonic communications. Civil action is also authorized by this statute. Exceptions to all-party consent are when receiving telephone threats of extortion or bodily harm, or telephone harassment. The gathering and disclosure of such evidence, including the contents of the telephone messages received or overheard, does not violate any law of this State. Delaware also has a business use exception to the law similar to Maryland's.