What is the impact of disclosing confidential information to a third party?

What is the difference between an order compelling a third party to produce information as part of a criminal investigation and a subpoena compelling that third party produce information once a criminal proceeding has commenced? ("New York", United States of America)

Does a federal court's refusal to order the government to accept a subpoena for a confidential informer produce the same effects as a decision not to disclose the identity of a confidential informant? (MultiRegion, United States of America)

Can a third party enforce a contract if the contract was entered into for the express benefit of the third party? (MultiRegion, United States of America)

What is the test for determining whether a plaintiff has been successful in obtaining an order for a third party to sue for damages from the third party? (MultiRegion, United States of America)

Can a probation officer order that a defendant must notify a third party that he poses a risk to that third party after serving his sentence? (MultiRegion, United States of America)

Can a third party state that the information is confidential? (Canada (Federal), Canada)

Can a defendant seek suppression of evidence obtained by the police from a third party in violation of the third party's rights? ("New York", United States of America)

What is the test for determining the reliability of information provided by a confidential informant? (MultiRegion, United States of America)

Does the inclusion of a third party on a confidential communication between a lawyer and a client constitute attorney-client privilege? (MultiRegion, United States of America)

What is the legal test for disclosing the identity of a confidential informant? (MultiRegion, United States of America)