The problem with your first and third examples is that it leaves it open and vulnerable to anyone other than the NSA. Like if a "backdoor" is left open for encr

The problem with your first and third examples is that it leaves it open and vulnerable to anyone other than the NSA. Like if a "backdoor" is left open for encryption, as soon as it's discovered then that door is open to anyone. The problem with your second example, targeting a specific user, is that they're doing this without any kind of warrant.