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this clothesline in Long Island New York\h
was the U.S government's first ever system\h\h

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for transmitting top secret data it was the\h
Revolutionary War and the Americans needed\h\h

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a way to get information from New York City to\h
George Washington's headquarters in Morristown\h\h

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New Jersey without the British intercepting it\h
so they wrote down 763 words assigned each a\h\h

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number between 1 and 763 and bada bing bada boom\h
you've got the worst Cipher in military history\h\h

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but whatever people's brains were too riddled with\h
dysentery or something and somehow this seemed to\h\h

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do the trick these encrypted letters would travel\h
along this route from New York City to here in\h\h

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Setauket where they would be stashed in one of\h
five locations a local woman and a strong would\h\h

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then hang up a black Petticoat on her clothesline\h
to signal to nearby ships that the letter was\h\h

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ready to be picked up with between one and five\h
white handkerchiefs to indicate which location\h\h

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the letter was hidden in from there the letter\h
would then be secretly picked up and make the\h\h

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rest of the journey to Morristown unfortunately\h
we're no longer allowed to distribute information\h\h

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about British warships and the US Department\h
of Defense has since updated its methods for\h\h

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securely transmitting government secrets today the\h
US uses three different networks each designed for\h\h

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different levels of classification to send\h
sensitive data across the globe here's how\h\h

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they work the first and least secure of the three\h
is called necromant the non-classified Internet\h\h

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Protocol router Network basically nevernet is\h
a private interconnected network of government\h\h

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computers that is attached through secure gateways\h
to the rest of the internet technically you could\h\h

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access it using the same connection you're using\h
to watch this video but you probably wouldn't get\h\h

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very far think of it like a gated community they\h
might be connected to the wider system of roads\h\h

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but if you go there without the right credentials\h
you'll wind up in prison or shot you can't access\h\h

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never Nets unless you're part of a government\h
agency or approved government contractor that's\h\h

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giving you access but it's used pretty widely and\h
isn't monitored too closely none of the data on\h\h

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nippernet is technically classified it's just\h
stuff that the government doesn't want floating\h\h

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around in public data like tax records internal\h
schedules or these photos of Obama paddle boarding\h\h

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for data that's actually classified and not\h
just too titillating for public consumption\h\h

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the Department of Defense uses a network\h
called sipper net or with a secure Internet\h\h

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Protocol router Network this is the network that\h
deals with any information that's been labeled\h\h

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confidential or secret the first two levels of DOD\h
classification examples of confidential or secret\h\h

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information might be say lists of War reserves\h
scientific studies relevant to military Tech\h\h

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information about enemy weaknesses this video of\h
two U.S Apache helicopters firing on civilians\h\h

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that got leaked when supernet was compromised in\h
2010. oh whoops how did that get in there oh well\h\h

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you get the idea this network unlike neighbor\h
Nets is completely disconnected from the rest\h\h

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of the internet and only connects government\h
computers to one another it does this with\h\h

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a fairly standard method of data transfer called\h
packet switching where your messages split up into\h\h

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pieces all of which take different routes along\h
the network before reaching their destination\h\h

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now keeping all the classified data contained\h
within this network separate and unsullied by\h\h

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the evils of public internet is more complicated\h
than just isolating the network itself you also\h\h

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need to isolate every single device that has\h
ever touched the network if you connect your\h\h

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computer to supernet it is permanently considered\h
classified at the secret level that means it can\h\h

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only be used or stored in locations that have been\h
approved by the government to have secret level\h\h

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data in plain sight anything that's ever been\h
plugged into that computer is now also considered\h\h

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classified technically if you plug this USB rock\h
into to separinet the Department of Defense would\h\h

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be bound by federal law to protect its secrecy\h
forever but despite all those headaches cybernet\h\h

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is not even the government's most secure network\h
now that would be the joint worldwide intelligence\h\h

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Communication System the network used to transmit\h
top secret data for some reason the government has\h\h

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been a little vague about exactly how this\h
network works but on a technical level it\h\h

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functioned pretty similarly to say Burnet data\h
is transmitted by a satellite across a closed\h\h

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network of government computers with the ability\h
to denote which packets of data are most sensitive\h\h

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those then take the fastest and most secure route\h
through the network so they spend the least amount\h\h

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of time flying through space where anyone could\h
NAB them with a really tiny butterfly net any data\h\h

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on jwics can only be stored or accessed in highly\h
specialized rooms called sensitive compartmented\h\h

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information facilities there are quite a few of\h
these around the globe that can be as small as a\h\h

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closet or as large as an office building but some\h
notable examples would be the Situation Room in\h\h

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the White House or the cabin of Air Force One in\h
order to keep the top secret data contained within\h\h

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jwics both top and secret these rooms have some\h
very very specific technical requirements that\h\h

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you would think would be kept Under Wraps but are\h
actually all written out in excruciating detail in\h\h

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this seemingly not very top secret document since\h
publicizing this is apparently not considered a\h\h

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national security risk here's exactly how these\h
facilities are constructed standard seif walls are\h\h

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composed of 5 8 inch gypsum wall board buffered\h
by three and a half inches of sound attenuated\h\h

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material and sealed with acoustic sealant\h
to ensure the secrets don't slip through the\h\h

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cracks each perimeter wall is installed with radio\h
frequency protection as well as optional speakers\h\h

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that play vibrations louder than any conversations\h
being held inside the room what doors need to\h\h

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follow these specifications steel doors need to\h
follow these specifications windows are a bad\h\h

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idea monitors must be faced away from the doorways\h
and no one from any country we've recently pissed\h\h

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off is allowed to build any of this so that's how\h
you keep top secret secret or you could just use a\h\h

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clothesline because nobody cracked that either\h
but hey you know what's not a highly sensitive\h\h

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government secret the amount of absurdly Good\h
original content that's been piling up on nebula\h\h

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recently if you're out of the loop nebula is the\h
create your own educational streaming service that\h\h

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I started with my friends it's become this amazing\h
opportunity for us to create the videos that we've\h\h

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always wanted to create but couldn't because\h
the constraints of YouTube the team and I have\h\h

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already produced four on-site documentaries for\h
nebula as well as a trivia show a bizarre piece of\h\h

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I break laws across the country but that's just\h\h

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us navya also has channels like City beautiful\h
producing a whole series on the greatest cities\h\h

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on Earth or real life lore taking a deep dive on\h
Modern conflicts around the world that's not to\h\h

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mention all the content that you can watch early\h
on nebula before your favorite creators bring\h\h

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those videos to YouTube if you've been following\h
our other channel just like the game you can watch\h\h

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those videos a week in advance on nebula and say\h
a full episode ahead of everyone watching on here\h\h

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the best way to get access to it is through the\h
Curiosity stream never the bundle deal especially\h\h

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