Passion. Diligence. Experience.

 About Treston Security Services

Treston Security Services was founded in 2017 by former members of the Israeli Defense Forces (IDF), the United States Secret Service (USSS), and the Drug Enforcement Administration (DEA). With a collective history drawn from expertise in military operations, federal law enforcement, and education, the founders envisioned the company as a resource for "those in need”. Treston Security Services’ Vision Statement includes making the protective, intelligence, and training resources typically reserved for high threat and high profile clients, readily available to less visible people in need. We are proud of our services on behalf of victims of domestic violence, displaced veterans, and mentoring students regarding career guidance. 

We’ve spent many years protecting very small clients to high profile executives and celebrities and, it is with this ‘client above all’ attitude instilled in our security officers that allows us to say, without question, “leave your security to us”!

Contact us now for a free on-site threat assessment.


At Treston Security we want to make sure we are the right for for you, so we are happy to provide free on-site assessment to potential businesses and individual clients.

Meet the Team

  • Mark Treston

    CHIEF EXECUTIVE OFFICER

  • George Casillas

    EXECUTIVE DIRECTOR

  • John Alvarez

    DIRECTOR OF OPERATIONS - TEXAS

  • Maynor Dardon

    GENERAL MANAGER

  • Virginia Suveiu

    DIRECTOR OF RISK MANAGEMENT