At GCSC, our team of professionals specializes in providing businesses with the expertise and foresight needed to properly protect their product and financial interests. We are confident that when combined with the growing success of your business, our individualized approach to digital, legal, and structural safety will create a meaningful impact.

Charles Ribando has had a distinguished 30-year career in public service recognized for his successful leadership in government administration, public safety and law enforcement. Providing a wide breadth of functions for a number of agencies, Chuck has an in-depth understanding of agency needs in assessment, planning, investigation methods, and project management at all levels. He is a leader in investigation methodologies from local street and violent crime to global terrorism and corruption. He has also spearheaded investigations in foreign lands, critical hostage negotiations and high-profile crime and terrorism investigations. Chuck also has extensive background in areas such as homicide and special victim’s investigations, law enforcement computing systems, and gang investigations.

Mr. Ribando was appointed as Nassau County’s Deputy County Executive for Public Safety in 2015. Prior to his appointment under the County Executive, Mr. Ribando managed investigations for the Nassau County District Attorney, originally as the Chief investigator and then as Executive Chief of the DA’s Investigative Division. He has noted achievements in handling high priority cases and interagency activities and is also responsible for creation of the Pharmaceutical Crimes Unit and the Human Trafficking Task Force, Gun Task Force and Witness Protection Unit.

Ed Eisenstein is a leader in the technology field and has designed, consulted, procured, implemented, upgraded and administered multi-user computer networks for thousands of clients and organizations.

Mr. Eisenstein implemented his first 1M dollar network in 1993 for Smithtown school district before founding his first IT company, Frontline Technologies, in 1996. After selling the company a few years later, he funded the creation of a recording studio that helped to jumpstart the careers of multiple professional artists.

In 2001 Ed joined the Listnet.org technology incubator in Bethpage and then went on to lead national technology company, Rent-A-PC, Inc. until it was acquired in 2007. For the next few years, he partnered with a wireless internet business and established the technology corporation United Network Associates Inc., until being hired as the Chief Information Technology Officer for Nassau County. He maintained this role until the introduction of a new administration in 2018. Since then, Ed has returned to his work at United Network Associates Inc.

In his role at Gotham Security, Ed is committed to helping businesses operating within the cannabis industry to build individualized digital security systems that ensure uninhibited protection, surveillance, and remote monitoring.

David Schwartz is an internationally recognized premiere AV Rated trial attorney and lobbyist. He received his Masters in Law from the Fordham University School of Law and his undergraduate degree from Tulane University. He has been named by judges and his peers as a member of the prestigious Super Lawyers list for the past 8 years and has received the highest rating as an attorney from Martindale-Hubbell. He has spent his entire career practicing law as a litigator and for the past decade as a lobbyist and advocate on behalf of businesses, trade associations, not-for-profits, foreign countries and individuals. He is admitted in all courts in the State of New York and Washington DC and has appeared pro hac vice in many other jurisdictions. Whether it is in the courtroom defending and advocating on behalf of litigants in high profile criminal and civil cases or in the halls of the Capital, the same philosophy and attitude exists, which is to advocate as aggressively and passionately for the client as possible. He is well known as an aggressive and powerful trial attorney. Mr. Schwartz has represented clients at all ends of the spectrum, including some of the largest companies in America to some of the least fortunate in our society on criminal matters. Every client gets the energy and attention needed to achieve positive results. It is this training as a trial attorney, trying dozens of jury trials and trying in total over 100 trials and handling thousands of cases, that makes him extremely effective in navigating the political process for his clients.

Brad Gerstman is a leading attorney, lobbyist, and government relations specialist with a diverse background in business, advocacy, tech, and media.

Brad began his legal career in the district attorney’s office where he prosecuted all levels of violent crimes. He then moved into the investigations division to litigate long-term cases, before starting his private practice in 1998.

Since that time, Brad has developed a reputation for successfully steering clients through complex legal, legislative, political, and bureaucratic processes. Utilizing individualized strategies, he taps into political trends and fashions them to the advantage of his clients. This has proven especially important for those introducing disruptive technologies or operating within heavily regulated markets.

Brad’s exceptional reputation for building both relationships and coalitions has earned him the respect and support of policy makers. As a result, he has helped to push forward essential legislation for New Yorkers as it pertains to business, advocacy, land use, municipal matters, and education. In addition to serving on several finance committees, he has also been personally selected by prominent members of government to provide campaign guidance and fundraising aid. Most recently, Brad has joined the political action committee Striving For A Better New York, which is supported by NYC Mayor Eric Adams, as an Advisory Board Member.

For two decades, Chris Dennis dedicated himself to a career of service. As a member of the New York Police Department (NYPD), Chris served as both an officer and later, a sergeant.

Since retiring from the police department, Chris has worked in the private sector to provide security and consulting services to individual clients. He is currently training to receive his pilot’s license at the College of Aeronautics.

As a senior advisor with Gotham, Mr. Dennis offers expertise as it pertains to safety, security, and compliance.