1. A method, comprising: receiving a request to access an on-demand service from a requestor at one of a plurality of entities; determining whether the request is from a source providing a risk of access, the determination being based at least in part on stored information associated with at least one of a plurality of users or the one of the plurality of entities; and managing the risk of access to the on-demand service by the requestor as a condition of permitting the requestor to access the on-demand service.