Well, looks like this was actually terrorist attacks - not thargoids.
The initial reports appear to have been automated GalNet broadcast systems installed into stations - triggered by the amount of devastation the terrorists achieved.
(I prefer this explaination)
There is a problem with this though....
Come on FDev, at least do a hue change so it just looks red not green... (even better, remove the layer that does the weird thargoidy texturing to the weapon marks...)