There's a 'secret' URL in there that anyone able to decrypt the message will be compelled to click on, at which time the creator can claim either to have contac

There's a 'secret' URL in there that anyone able to decrypt the message will be compelled to click on, at which time the creator can claim either to have contacted Snowden, or to have empirical evidence that the NSA can crack 4096-key RSA PGP messages and none of us are safe.