Various embodiments relate generally to computer science, data science, application architecture, and computer data security. More specifically, techniques for credential and authentication management in scalable data networks is described, including, but not limited to, multiplexed data exchanges in a scalable data network. For example, a method may include receiving a subset of requests to access a data network. The requests each may originate from an associated computing device having a source identifier. The method also may include data to cause modification of data representing presentation of a hosted page via the data network, monitoring data traffic from the data network and managing actions initiated via a request based on the data traffic. Optionally, data traffic received via an aggregation port may be filtered to origination of a request associated with a source identifier.