This Technical Report describes the current landscape of the text messaging ecosystem, architectures, and technologies used to deliver messages and describes countermeasures currently available to stakeholders to protect consumers from unwanted messages. The document primarily considers the Short Message/Messaging Service (SMS). A gap analysis is provided so as to identify potential areas where additional standards work to enhance existing mitigations may be needed. The document does not propose new mitigation solutions, but rather recommends the formation of a task force to evaluate methods for verified identity transmission and validation in text messaging.