A SETI target..
I always thought a machine intelligence that went Kardashov 3, would increase the density of it's galaxy by moving the stars closer together, to protect from a hyper-velocity threat. You can't hit a planet or Dyson Sphere if a bunch of stars are in the way.
Astronomers discover densest galaxy ever
https://www.sciencedaily.com/releases/2013/09/130924141701.htm
The only thing you may expect to download from Kardashov 3 is some kind of AI. Do you really want it?
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