1. A method, comprising: detecting a user activity at a user device wherein the detected activity corresponds to a potential interaction between the user device and a web service; analyzing the detected activity to determine one or more attributes of the detected activity; comparing the attributes of the detected activity with a user-posting rule which defines one or more of (i) a rule for identifying restricted transmissions of data from the user device to the web service for display by the web service and (ii) a rule for identifying permitted transmissions of data from the user device to the web service for display by the web service; based on the comparing step, determining that the detected activity corresponds to a controlled activity; and based on determining that the detected activity corresponds to a controlled activity, implementing one or more automated responses.