You must pick up the hacking device in the laboratory area of ​​the map. When the excavator is announced to a area, go to the spawn room. There you will see multiple panels, one of which is blinking and making a noise. After you find the panel, just use the hacker on it.

not trying to be a wannabe detective, but you have "ground control" and "cryogenic slumber party" achievements unlocked. another player in the lobby could have done the job without your help for cryogenic slumber party; but I believe that ground control requires "you" hacking all three excavator panels at least once in a game, before any breach happens.

perhaps you've played moon only once with a friend just for the achievements and never touched it again. and actually, you made a direct hit about player reactions to excavators, as they function basically the same in both maps. 95% of the players who have no idea regarding leviathan's excavators are the same people who have never (or little) played moon.

you can check the reddit link below if you are bored/tired of exploring alone and want to learn more details about leviathan;

https://www.reddit.com/r/CODZombies/comments/gt22ju/leviathan_easter_eggs/

Originally posted by lewosch:

not trying to be a wannabe detective, but you have "ground control" and "cryogenic slumber party" achievements unlocked. another player in the lobby could have done the job without your help for cryogenic slumber party; but I believe that ground control requires "you" hacking all three excavator panels at least once in a game, before any breach happens.

umm it does not, a friend just carried through me through the easter egg a long time ago when i wasnt good at the game :p but i do appreciate the reddit post thing.