The Distributed Denial-of-Service Defense (D³) project's aim is to develop an architecture to detect and mitigate Distributed Denial-of-Service (DDoS) attacks on schools and other public organizations.

D³ is a Dutch project, funded by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) under award number: 628.001.018. The project consortium consists of  the University of Twente, SURFnet bv and Logius.  The project's duration is 2014-2018.