Cyber Safety for Sharks : A Secure Tagging System to Deter Illegal Shark Fishing, by Prof. Per Enge, Stanford University
Fri April 29, 2016, from 3:00 PM to 5:00 PM
The Ecole Nationale de l'Aviation Civile (ENAC) and the French Space Agency's "Satellite Positioning and Timing" Technical Skills Community (CNES CCT PDS) have the pleasure of inviting you to a guest lecture by Prof. Per Enge from Stanford University, to be held on April 29th, 2016 at ENAC premises in Toulouse, France.

The session will consist on a one hour presentation followed by discussion.

The registration to this event is free of charge.


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A Secure Tagging System to Deter Illegal Shark Fishing

Overfishing is a critical problem across many of the world’s fisheries, and depletion of apex predators such as tunas, billfishes, and sharks is becoming particularly acute. Forward-thinking organizations are working to protect these fish populations by establishing marine sanctuaries where no-take zones should allow depleted species to recover. Today, poachers routinely violate these no-take zones and authorities are unable to monitor the large areas under protection. Hence, Stanford University is now building a FishChip that will be affixed to the fish and immediately send the GPS location to authorities via Iridium satellites when the animal is caught. A saline sensor detects that the shark has been caught and is being lifted onto the poacher’s boat. This event triggers the device to quickly send the GPS signals back to the authorities via the Iridium satellite communication system. The GPS data will be sent within seconds before the poachers are able to destroy the tag.

Even so, this first generation FishChip is not secure. The poachers will eventually deny the GPS service by broadcasting a powerful jamming signal from deckside. Alternatively, they can send a counterfeit GPS signal from their deck to spoof the GPS signals that are transmitted back to the authorities. We have now embarked on the design of a second generation FishChip that will be hardened against these jammers and spoofers. It will no longer use GPS; the GPS satellites are in Medium Earth Orbit some 20,000 km from Earth, and so the GPS signals are very easy to deny with deckside jammers. Instead, we will use Doppler signatures from the Iridium satellites. These signals are 30 dB stronger than GPS, and so the needed deckside jammer would be more conspicuous and detectable at much longer ranges. Moreover, we will send digital signatures over Iridium that are nearly impossible to predict, and so spoofed signals would be detected at the authority’s server that would have knowledge of the signatures in real time.