Their customers are companies. Almost every company, of at least a certain size, has one or more security tools installed on every host in the organization; there are called Endpoint Detection & Response (EDR) tools. Some marquee products are SentinelOne and CrowdStrike Falcon, but there are dozens. Huntress makes their own security tool but operates it for their customers as a service, which is called Managed Detection & Response (MDR). Everything on this page is legit.