This is a technical but pretty readable treatment of the same topic: https://www.blackhat.com/docs/eu-15/materials/eu-15-Kang-Is-Your-Timespace-Safe-Time-And-Po

This is a technical but pretty readable treatment of the same topic: https://www.blackhat.com/docs/eu-15/materials/eu-15-Kang-Is-Your-Timespace-Safe-Time-And-Position-Spoofing-Opensourcely-wp.pdf https://www.blackhat.com/docs/eu-15/materials/eu-15-Kang-Is-...