Inside an Intelligence Dead Zone: How Governments Defeat Spies, Signals, and Drones

0:00 Welcome back, everybody. Today's interesting spy story for you. Let's see how you like it. It's called inside an intelligence dead zone. How government defeats by signals and drones. So imagine you're running surveillance against your Russian intelligence facility. Normally, an intelligence service has an enormous technological toolbox radio frequency surveillance, satellite imagery, electronic intercepts, remote sensors, drones, directional microphones, cyber collection.

0:27 But as your surveillance approaches this particular compound, something strange happens. Radio signals disappear, electronic transmissions become inaccessible, and drones can't operate. Conversations also occurring inside cannot be remotely understood. If you remember the old show Homeland, the characters essentially describe this as a dead zone. Could something like that actually exist? Well, it does. There isn't one magical technology that creates an invisible intelligence bubble. Instead, governments can layer multiple counter surveillance techniques.

0:57 Let's start with RF shielding. It means read frequency cell phones, Wi Fi, bluetooth radios and cantless other texts communicate using electromagnetic radiation. A highly secure facility can therefore be constructed significantly reduced radio frequency energy entering or leaving particular areas. One method is what's curled, creating what's called a fairy day cage. If fairy day enclosure uses conductive materials such as metal mesh, specialized wall materials, or conductive coatings to attenuate electromagnetic signals. So imagine putting your classified conference room inside an electric magnetic shell. Radio waves reaching that shell can be reflected or absorbed rather than freely passing through.

1:42 I mean someone sitting outside the building may have greater difficulty detecting transmissions originating inside. But there is a problem. A shielded room still needs electricity. It may need telephone lines, network connections, ventilation pipes, doors. Every penetration through that protective boundary potentially becomes a vulnerability, and that's where signal filtering becomes important. Electrical cables can potentially carry unwanted high frequency signals across the secure perimeter. Specialized filters can therefore be installed on power and communication lines to attenuate or reduce the frequencies that aren't supposed to cross the boundary. Look at it as an electronic checkpoint. The system allows necessary

2:24 electrical power or authorized communications through while suppressing unwanted signal components that could potentially provide a leak. Secure facilities may also use carefully designed cable routing, grounding, bonding.

2:37 And shielding.

2:38 This overlaps with another famous intel security concept, tepest. Tipest is associated with protecting classified information from compromise to unintended electronic emanations. A computer monitor, cable electronic device can generate electromagnetic energy simply by operating. So security isn't only about preventing someone from potentially transmitting classified information. It's also about preventing equipment from unintentionally radiating information to the surrounding environment.

3:08 Now imagine we've defeated radio frequency surveillance, the spies outside aside to simply listen, and that's where acoustic isolation becomes important. Ordinary walls aren't designed to stop sophisticated surveillance. Sound is mechanical energy. When you speak, pressure waves travel through the air and can cause surrounding structures, walls, doors, windows, and other services to vibrate. Highly secure rooms therefore may incorporate specialized construction intended to reduce the transmission of those vibrations that can include multiple wall layers. Acoustic insulation, isolated structural assemblies, especially designed doors and seals, careful treatment of ventilation ducts and other openings.

3:49 Windows deserve particular.

3:51 Attention because glass can vibrate and response to sound occurring inside a room. Historically, INTEL services of investigated methods of detecting the extremely small vibrations remotely and attempting a reconstructed information from them. So a secure facility might eliminate exterior windows entirely, or employed designs intended to make that type of collection more difficult. Then we have what we call sound masking. Instead of relying exclusively on physical isolation, facilities can introduce control background noise designed to reduce the comprehension of conversations outside the protected space. So let's move outside the building. What happens when the CIA launches a drone?

4:33 This is where the modern intel battlefield becomes especially interesting. Counter drone systems now exist and they're called counter uas systems. Radar can identify objects moving through protected airspace. Radio frequency sensors can search for communication links between a drone.

4:48 And the operator.

4:50 Electro Optical cameras can visually identify suspicious aircraft. Infrared systems may help detect them under certain conditions. Acoustic sensors can sometimes recognize characteristic drone sounds. Once a drone has been detected, However, stopping it becomes a separate problem. Many drones depend on radio frequency command link. Disrupting that link can potentially interfere with the operator's ability to control the aircraft. Another potential target is satellite navigation. Many unmanned aircraft relied heavily upon systems such as GPS for positioning and navigating. Interfering with the satellite navigation reception can therefore make some drones considerably less reliable. This is where you hear terms like jamming

5:32 or spoofing into the intel VOCAB. Jamming overwhelms or interferes with a segment, well, spoofing attempts to provide false navigation information that causes the receiver to calculate into correct position. Neither technique creates a perfect anti drone force field. Some drones can still operate autonomous but autonomously. Others can use inertial navigation, visual navigation, and so forth. Some sophisticated military systems can incorporate anti jamming technology, so even how protect the compound faces a constant technological competition between surveillance and counter surveillance. That brings us to the biggest limitation of the homeland idea. You can shield the building and can isolate conversations, filter electrical signals, control electronic equipment, search for

6:15 hidden transmitters, detect trones, and interfear with communications, but you still haven't made the facility invisible. Satellites can potentially observe the compound. Intel analyts can watch vehicles entering and leaving. They can identify employees, they can examine communications occurring outside the protected area, established patterns of life, and perhaps most importantly, recruit human sources. And that's where we get to human human intelligence and building dollar electronic security system doesn't help very much, and someone on the inside is squeakily working for your adversary. That's why a real intelligence dead zone isn't actually a place where intelligence collection becomes impossible. It's

6:55 a place where the defender has systematically attempt to deny multiple forms of techno tech intel collection. So layer those systems together and you can create an extraordinarily difficult intel target, but never a perfect one.

7:10 Espionage has always been a tech arms race.

7:13 Every time someone builds a better wall, someone else starts figuring out how to listen through it, and sometimes the best solution isn't penetrating the wall at all.

7:20 Let's find the person who already has the key.