Yesterday I noticed that my NovaCat (5CERLasers) had this red circle around it when checking the map. My radar was active, so this would indicate GECM. But neither the Hud or the wiki say that it should have GECM. And sometimes the novaCat seems to be invisible or hard to find.
I will need to try this some more times to be 100% sure, but there seems to be something wrong about it.