This assignment discusses how Information System (IS) functions and the challenges faced by Donhauefavret Contractors. It also selects a grand challenge and discusses why it was chosen. The chosen challenge is vulnerability of open source software. The article explains the three entities of IS function and the challenges faced by open source software such as vulnerability, inadequate support, and steep learning curve. The vulnerability of open source software is a grand challenge for the organization as it may cause dysfunctional activities that take place under the organization.