Firewalls & Defense
Indestructible firewalls, defense points, and a farm that's hard to crack.
Fixed firewall slots sit between the miners in every line. Firewalls are indestructible — they cost attackers valuable attack power without ever taking damage themselves.
How many firewalls you can place depends on your defense points — these rise with your facility tier and rack shelving. Roughly speaking, 1 firewall fits at Home, 2 in the Garage, 6 in the Warehouse and 10 on the Farm. Well-maintained, actively running miners are also harder to capture than inactive ones.