Edward Snowden & Neil deGrasse Tyson Talk about Alien Encryption on deGrasse's Star Talk radio show. This is an interesting topic of conversation. They talk about how encryption works and the theoretical basis of an Extra Terrestrial source being "encrypted by default". Perhaps this is the reason why "they" may be silent.
Original Show on "Star Talk" http://www.startalkradio.net/show/a-c...
Neil deGrasse twitter https://twitter.com/neiltyson?lang=en
Edward Snowden twitter https://twitter.com/snowden?lang=en