 COLUMBIA, Md., Feb. 10, 2021 GLOBE NEWSWIRE -- Tenable Holdings, Inc. Tenable Nasdaq: TENB, the Cyber Exposure company, today announced that it has entered into a definitive agreement to acquire Alsid SAS Alsid, a leader in Active Directory security. Alsid for Active Directory is a Software as a Service SaaS solution with an on-premises deployment option that monitors the security of Active Directory in real time. The solution enables users to find and fix existing weaknesses with dynamic threat scoring, complexity ratings and recommended actions. Alsid continuously and non-disruptively discovers new attack pathways and detects ongoing attacks in real time, recommending remediations without the need to deploy agents or leverage privileged accounts. 