March 2017
ATIS is central to much of the coordinated industry work on solutions to prevent and reduce the impact of Caller ID spoofing and related robocalling. Illegitimate Caller ID spoofing increases the impact of fraudulent robocalls and undermines techniques to prevent unwanted calls. This report highlights the practical mitigation techniques the industry is developing to provide the consumer with useful tools to reduce unwanted robocalls, and concludes that a layered approach, similar to that used in cybersecurity efforts, provides the flexibility to respond to these evolving threats.