Our Team


John mckenna

interim Executive Director


John McKenna currently serves as the ACSC Interim Director and as a member of our Board of Directors since 2017. He is also President of RoundTable Security and retired as Senior Vice President and Chief Information Security Officer for Liberty Mutual Insurance in 2018. While there, he had enterprise-wide responsibility for Liberty Mutual’s global information security strategies and programs.  

John joined Liberty Mutual in 1979.  His career in Information Technology has included assignments as a software developer, data base analyst, program manager of enterprise data strategies and strategic development initiatives, Market CIO, and VP of IT Strategy and Planning.

John holds a B.S. degree from the University of New Hampshire.

Emily Walt

Director of Communications


Emily Walt joined the ACSC with over 15 years of investor relations and communications experience. Prior to the ACSC she was an investor relations consultant for Avid Technology. Before Avid, Emily was the Director of Investor Relations at Carbonite where she was the first internal head of Investor Relations. Prior to joining Carbonite, she spent six years at EMC; the first three as a Manager of Global Investor Relations and the remaining three creating communications programs internally for the global sales and corporate finance divisions. Before EMC, Emily was an Investor Relations Specialist at Thermo Fisher Scientific (NYSE: TMO).  She started her career working in finance and marketing functions in healthcare venture capital and real estate investment management.

Emily is strong supporter of diversity in the workplace, having led the women’s employee resource groups at Carbonite and EMC. She has also served as the Co-President of the Boston Chapter of Ellevate, a global professional organization investing in women. Emily is a board member of the Thomas Crane Public Library Foundation.

She is a graduate of Boston University.