Digital certificates accredited by the Interoperable Global Trust Federation (IGTF) are now available to subscribers of Internet2’s InCommon Certificate Service. These certificates enable secure connections between services in XSEDE (the Extreme Science and Engineering Discovery Environment) and other cyberinfrastructure providers, including Open Science Grid and the European Grid Infrastructure. I n contrast to the digital certificates used on web sites, IGTF server certificates secure the distributed computing systems that provide access to supercomputers, data archives, and other research infrastructure. The InCommon IGTF server certificates are an additional option, provided at no additional charge to subscribers, alongside the other certificate types already available. Subscribers should choose the IGTF certificate option when working with IGTF relying “This joint effort with XSEDE has enabled InCommon to develop another service of value to the research community,” said John Krienke, director of trust services at Internet2 and InCommon’s chief operating officer. “The InCommon Certificate Service and InCommon Federation together provide an interoperable framework for authentication of users and servers increasingly relied upon for research collaborations.” For more information, visit https://www.incommon.org/certificates/igtf/ .