Satellite communications underpin much of the world’s connectivity.
Recent research, including a 2025 academic study, has shown that some GEO satellite links still carry clear-text IP traffic, exposing voice calls, SMS messages and operational data.
These systems support cellular networks, aviation, maritime operations and remote infrastructure across vast regions.
When transmissions are not properly encrypted, sensitive information can become observable to anyone capable of monitoring the RF spectrum.
Satellite Signal Observation
Image 1: SDR monitoring setup used to observe satellite activity in real time.
Image 2: Signal activity captured during a satellite pass, visible in the spectrum waterfall.
Much of this activity sits in a layer many organisations rarely monitor: the RF signals their systems depend on.
As reliance on wireless and satellite-connected systems grows, understanding how signals behave across this space becomes increasingly important for modern security, resilience and intelligence work.
At IntSpired, we analyse signal environments like these to help identify emerging exposure risks before they become operational problems.
Research paper:
https://satcom.sysnet.ucsd.edu/docs/dontlookup_ccs25_fullpaper.pdf
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