(6) The encrypted messages that are being sent out by the aliens are indistinguishable from microwave background radiation, thanks to the heavy modes of encryption that is being used by the aliens.
(7) The cosmic microwave radiation that is being received by earthlings could be pretty much the sounds of an alien TV show or sound from a phone call, which due to the encryption turns out to be regular cosmic radiation to us on earth.
(8) Going in line with the theory of Snowden regarding alien communication, scientists at Parkes Observatory in Australia have detected a very strange series of radio bursts which is fast enough to be thought of having alien origins. The bursts have been observed and studied since 2001 and it is being determined that the sounds are coming from far outside our galaxy, but the source seems to be relatively smaller than usual sources in the cosmic world.
(9) The bursts that are being received are multiple of a single number which is 187.5, which has forced the astrophysicists to start thinking that whether this is a new type of pulsar or some sort of an alien beacon.
(10) The classified documents that were leaked by Snowden from the NSA reveal that there is a strong possibility that the government uses UFO conspiracy theories to distract the attention of the common people from real secrets of defense.
Going by the theories of Edward Snowden, it certainly becomes obvious that alien messages are prevalent in the universe, however humans would need to develop even more to decrypt those readily available messages to understand what is it that our alien friends actually want to tell us about.