Mark Tonnesen

Mark is the Chief Information Security Officer at Neustar, where he leads the definition, development, delivery, and security of the company’s technology infrastructure and services. He is also responsible for the overall operations of the company’s IT and product infrastructure, data centers, and network and communications capabilities—which include the Network and Security Operations Centers.

Mark's Articles

An Open Letter from Neustar’s CISO to our UltraDNS Customers

October 20th, 2015

On October 15, 2015, Neustar’s UltraDNS service experienced an outage as the unexpected result of a configuration change. We've begun a full review of our operational plans and service architecture in order to avoid these problems in the future. Having learned from this experience, we pledge to continue to improve our operations plans and implement new technologies to ensure that our UltraDNS is the best service of its kind. Read Full Article