Abstract: Traffic is received at a distributed cloud computing network. The traffic originates from a computing device using a mobile data connection. The traffic is associated with an identifier that identifies a SIM of the computing device. Using the SIM identifier, an identity for identity-based policy enforcement at the distributed cloud computing network is determined. The identity is uniquely associated with the SIM identifier. An identity-based policy that is applicable for the received traffic for the determined identity is determined. The identity-based policy is enforced.