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Q&A

Spaceship Emission Security

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In my military scifi novel the military is, obviously, very concerned with security aboard its spaceships. They don't want other people to be able to receive any information about what happens on their ships. They also don't want other spaceships to be able to send any signals to the computers and other devices used by the crew on the ship, at least no signals that didn't go through the "comm tower" that handles normal ship-to-ship or ship-to-planet communication and data transfer.

For ship sizes think modern destroyers/cruisers up to aircraft carrier size in space, just with a big engine at the back and all around armor plating.
Combat happens through missiles at distances between one and sixty lightseconds.
Technology is closer to The Expanse than Star Trek, i.e. no shields, no FTL communication and no teleporters.

Groundside on todays earth that might mean that wireless communication is forbidden, because the signals might be detected outside and someone with a powerful enough computer might eventually decrypt whatever was transferred through the wireless connection.

There are a few emissions that can't be prevented, e.g. heat and engine, but what other kinds of emissions could give information about what happens on the inside of the ships away? How would EmSec work in space?

My current idea:

All ship internal communication works exclusively via wall terminals using wires.
All handheld devices, Star Trek Padd analogues, are offline, unless connected via a cable to the ship computer.
Personal entertainment and communication devices, i.e. game consoles and mobile phones, are strictly forbidden unless the wireless capabilities are physically removed.

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This post was sourced from https://worldbuilding.stackexchange.com/q/121450. It is licensed under CC BY-SA 4.0.

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