Terms of the transaction weren't disclosed.
BitSec Global Forensics specializes in digital forensics, electronic discovery, data breach investigations and training.
"We are looking forward to the expansion capabilities provided by this merger," said Greg Conran, NDi co-founder and chief technical officer.
"Over the last eight years, BitSec has partnered with NDi to provide our clients with expert cyber- security services and training. The merger will allow our Service-Disabled Veteran-Owned Small Business to offer new solutions to existing clients as well as creating new opportunities for growth.
"We believe that by combining NDi's financial strength and SDVOSB designation with BitSec's global cybersecurity and private sector training portfolio, we can support the government organizations community with new cost-effective services and products," he said.
NDI said that as a result of the merger it plans to build a digital forensics lab in the Washington area for e-discovery and digital forensics to support clients in need of expert cybersecurity services.