HBGary is a subsidiary company of ManTech International, focused on technology security. In the past, two distinct but affiliated firms had carried the HBGary name: HBGary Federal, which sold its products to the US Federal Government, and HB Gary, Inc. Its other clients included information assurance companies, computer emergency response teams, and computer forensic investigators. On February 29, 2012, HBGary, Inc. announced it was acquired by IT services firm ManTech International. At the same time, HBGary Federal has been reported to be closed.