BTCS Inc
BTCS
Bitdeer Technologies
BTDR
Hut 8
HUT
Digihost Technology
DGHI
Argo Blockchain
ARBK
Castellum, Inc. is a technology firm. It operates in the development of strategic acquisitions in cyber security, information technology, information warfare, electronic warfare, software engineering, data analytics and program support. The company was founded on September 30, 2010 and is headquartered in Vienna, MD.