Security Lunch ☀️ Ed. — Wednesday, July 29th, 2026, 12:00 pm @ CoDa E160
Securing Ultra-High-Bitrate Media Streams with Thousands of Dynamic Endpoints
Arman Kolozyan
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Abstract:
This year's World Cup had half the planet watching. Yet few people know how well the video and audio streams at such events are protected behind the scenes. How hard would it be, say, for an attacker to tamper with the media at the production facility? It turns
out: easier than it should be. For decades, broadcast production relied on dedicated point-to-point cabling between the capture devices and the control room, whose physical isolation was, in effect, its security guarantee: tampering with a stream required
touching a cable. However, to meet the scalability and flexibility demands of modern productions, the industry has recently shifted to IP. The media streams from all the cameras and microphones now travel as ordinary network packets, and the physical protection
is gone. Any device on the network can read, tamper with, or inject packets into a live feed. With the IP standards now widely adopted, this exposure has become a pressing concern.
In this talk, I will give an overview of our work towards closing this gap, carried out in collaboration with the European Broadcasting Union (EBU). I will discuss the unique functional, security, and performance requirements, describe our proposed solution
built from well-established cryptographic protocols, and present our evaluation results.
This is joint work with Zayd Maradni (MPI-SP), Christian Knabenhans (EPFL), and Carmela Troncoso (MPI-SP).
Bio:
Arman Kolozyan recently obtained his master's degree in computer science and is currently a pre-doctoral researcher specializing in applied cryptography. For his master's thesis, he investigated vulnerabilities in zero-knowledge proof programs in collaboration
with Nokia Bell Labs. Prior to that, he analyzed the security of the Matter standard for smart home devices during an internship at KU Leuven's COSIC group. He is now interning at MPI-SP in Carmela Troncoso's SPRING group, where he is expanding his focus beyond
vulnerability analysis toward developing secure systems that are deployable in practice.