Improving Security. Managing Risk.  Delivering Value.


Recognized for Service Excellence by the Building Owners and Managers Association (BOMA), we provide contract security, intelligence, and technology solutions that help organizations and property owners improve security, manage risk and deliver value.

Our management team is extensively trained and highly experienced, with backgrounds ranging from property management to military intelligence.

Executive Team

John A. Hennessey,


Mr. Hennessey has over 25 years of leadership experience in security operations, law enforcement and property management. Prior to becoming President of Northeast Security, Mr. Hennessey held senior security operations leadership positions in the commercial real estate and hospitality industries, and property management leadership positions supporting the physical and tactical design and operations of some of the region's signature properties. A graduate of Northeastern University with a B.S. in Criminal Justice, Mr. Hennessey is a member of the American Society for Industrial Security, Massachusetts Chiefs of Police Association and the Building Owners and Managers Association.

Steven A. Barner,

Chief Financial Officer

Mr. Barner has over 20 years of progressively challenging financial, administrative and operational experience in a variety of industries. A graduate of Bentley College with a B.S. in Accountancy, Mr. Barner is a Certified Public Accountant and a Certified Management Accountant. He is a member of the American Institute of Certified Public Accountants, Massachusetts Society of Certified Public Accountants and Institute of Certified Management Accountants.

Sheila Quinlan,
Vice President, Quality Assurance and Customer Care

Ms. Quinlan has over 25 years of security industry experience with Northeast Security ranging from Director of Security at Class A High Rise properties, to Account Manager for US Department of Defense clients, to her current role where she is responsible for ensuring the highest levels Quality and Customer Care. A graduate of Westfield State College with a B.S. in Criminal Justice, Ms. Quinlan is a member of the American Society for Industrial Security and the Society for Human Resources Management.

Jeffrey P. Horblit
Chief Operating Officer and General Counsel

Mr. Horblit is an experienced attorney, prosecutor, and investigator, and brings to Northeast Security a unique combination of education, training, and experience.  Prior to joining the Northeast Security, Mr. Horblit founded and managed a successful law firm, served as an Assistant District Attorney in New York City, and was a Special Agent with the Federal Bureau of Investigation (FBI).   Most recently, Mr. Horblit served as CEO of Northeast Intelligence Group, Inc., a corporate investigations and risk consulting firm based in Boston, Massachusetts.  Mr. Horblit is a graduate of the Fordham University School of Law and is licensed to practice law in Massachusetts, New Jersey, and New York.