Lennon Security Corporation




Lennon Security Corporation has proudly joined forces with AT-RISK International (AT-RISK). This strategic merger marks the latest endeavor in Lennon Security's aim to provide high-quality protection services for today's environment.

Lennon Security will continue to provide technical surveillance countermeasures, threat assessment, and protection services under AT-RISK and clients are encouraged to contact us to discuss your unique security and investigation needs.

As Lennon Security Corporation and AT-RISK come together to form one world-class agency, we will continue upholding our responsibility to clients and the reputation built over decades.



Lennon Security Corporation is a multidisciplinary international security consulting firm that was established in 1998 with the goal of providing security services with standards and methods similar to that utilized by the United States Secret Service. The owner and staff have more than 42 years of extensive expertise in physical and technical security services and obtained their expertise while being employed by the U.S. Secret Service, military, law enforcement and intelligence communities. The staff were trained by the U.S. Secret Service, the government's Interagency Training Center and since retiring from the government and joining the commercial marketplace, they have continued their education and increased their skills by attending training classes and seminars to keep abreast of current security standards and regulations. The staff continues to conduct in today's marketplace Technical Surveillance Countermeasures (TSCM) - (detection of electronic bugs and wiretaps) and Threat/Risk & Vulnerability Assessments - (intrusion detections, alarms and perimeter security) as well as the other services listed below.


Lennon Security offers a wide array of security services and contemporary solutions to government, commercial and individual clients. Some of our commercial clients work in the following business sectors: communications, education, financial service, manufacturing, technology and telecommunications. Security services we provide include:

In today's competitive business environment, Lennon Security has developed strategic alliance relationships, which complement our capabilities and marketing efforts, with companies providing the following security solutions:

  • Executive Protection
  • Uniformed Security Services
  • Tactical Response Services
  • Worldwide Investigations
  • Forensic Behavioral Science Services

For additional information, please contact Patrick Lennon at 301-910-9224 or grenache31@gmail.com.


Home · About · Security Services · Company News · Contact Us