Tenable To Buy Active Directory Security Startup Alsid For $98M French startup Alsid leverages dynamic threat scoring and complexity ratings to recommend Active Directory remediations that don’t require the deployment of agents or the leveraging of privileged accounts. By Michael Novinson February 10, 2021, 09:36 AM EST Tenable has agreed to purchase cybersecurity startup Alsid for $98 million to help customers find and fix security weaknesses in Microsoft’s Active Directory in real time. The Columbia, Md.-based vulnerability management firm said its proposed acquisition of Paris, France-based Alsid will allow organizations to discover new attack pathways and detect Active Directory attacks in real time. Alsid leverages dynamic threat scoring and complexity ratings to recommend remediations that don’t require the deployment of agents or the leveraging of privileged accounts, Tenable said.