A recent academic study has revealed alarming security gaps in global satellite communications, exposing sensitive personal, corporate, and even military information to potential interception. Researchers from the University of California, San Diego, and the University of Maryland discovered that a large portion of geostationary satellites transmit unencrypted data, leaving them open to eavesdropping by anyone with inexpensive receiving equipment.
Over a three-year investigation, the research team assembled an $800 receiver setup using readily available components and placed it on the roof of a university building in La Jolla, California. By adjusting their dish toward various satellites visible from their location, the team intercepted streams of data routinely transmitted from orbit to ground-based receivers. To their surprise, much of this information was sent without any encryption or protective measures.
The intercepted traffic included mobile phone calls and text messages linked to thousands of users, in-flight Wi-Fi data from airlines, internal communications from energy and transportation systems, and certain military and law enforcement transmissions revealing positional details of personnel and assets. These findings demonstrate that many critical operations rely on satellite systems that fail to protect private or classified data from unauthorized access.
According to the researchers, nearly half of all geostationary satellite signals they analyzed carried unencrypted c
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