Sabotage
Client computers
- kill mainboards with a voltage surge through a USB killer
 
Server room
- crimp RJ11 plugs onto Cat.6 cables and mix them with 8P8C RJ45 crimped cables
 - take various network cables and bend them past the point of breakage
 - Raspberry Pi which scans the network and:
- clones MAC addresses, IP addresses
 - exhausts DHCP pools