1814 Franklin Street, Suite 618, Oakland, CA 94612
The Loss Prevention Group, Inc. (LPG) is a diverse and uniquely qualified company with its executive and management teams having over a century of combined experience in Corporate Security, Loss Prevention, Critical Operations and Law Enforcement. Since LPG's conception in April 2006, they have consistently been rated highest in quality by their customers and students.
Having managed corporate and departmental budgets, LPG's executive team is sensitive to working within their client's budgets, without sacrificing quality or service. We also know how important good quality training is to skilled positions such as Security Professionals.
LPG's executive and management teams have been employed as corporate officers, investigators, special events coordinators, and sworn law enforcement officers. LPG's executive and management teams continue to receive training in the latest techniques and technologies in both the private and law enforcement sectors.
"Our goal is to develop strong, long-lasting relationships with clients who benefit from our broad platform of experience. Our success is realized by collaborating and partnering with our clients from the very beginning so that a high level of trust and integrity is established early on."
Mark L. White
President & Chief Executive Officer
Mark has been actively involved in law enforcement, corporate security and loss prevention for over 35 years. Mark co-founded The Loss Prevention Group, Incorporated in April 2006 along with Matthew Lujan.
Prior to The Loss Prevention Group, Inc., Mark most recently held the position of Vice President of Operations for Sony Corporation of America, and directed the development of the Loss Prevention programs for all retail and entertainment based operations, including all policies, procedures, and investigative protocols. Mark was involved in all design and implementation phases of a 7-million dollar Security Operations Center. Mark also trained and mentored many associates who have gone on to become successful in the Security and Law Enforcement fields.
Mark has also worked for several Fortune 500 companies over the past two decades. Mark has worked in the capacity of Loss Prevention Director, Director of Asset Protection, Sr. Regional Manager, Corporate Investigator, Manager of Loss Prevention, and Undercover Investigator. Mark has also worked on external theft suppression teams, and assisted the California Highway Patrol's C.A.R.G.O. Cats, and Reno Police Department's Repeat Offender Programs.
Mark has specialized in investigations and integrity interviewing in “white collar crime” and embezzlement cases and has conducted over 2,000 interviews with a very high level of success and monetary recovery rate. Mark takes a "common sense" approach to solving critical security issues and investigations.
Mark proudly volunteers his time to a local police department as a Reserve Police Officer. Mark has been awarded Reserve Officer of the Year on four occasions during his tenure, and still actively patrols the streets both in patrol cars and off-road motorcycles.
Matthew J. Lujan
Vice President & Chief Financial Officer
Prior to forming The Loss Prevention Group, Inc. with Mark White, Matthew had a successful career in the proprietary security and loss prevention fields.
Matthew has held management roles in security and loss prevention with Sony Corporation of America and the Virgin Entertainment Group. His responsibilities included guard force management, executive and celebrity protection details, security control center operations, internal investigations, risk/threat assessments, inventory control, and special event security coordination. Matthew is a founding member of the National Shoplifting Prevention Coalition and a member of the American Society for Industrial Security.
Matthew is also a sworn Reserve Police Sergeant and volunteers his time to a city police department in his community. He primarily works in the patrol division, but also works special details including Gang Task Force and Alcohol Beverage Control Enforcement.
Matthew obtained an Associate's degree with Honors from City College of San Francisco, with a concentration in administration of justice. He is currently pursuing a Bachelor's degree in organizational leadership.
Marcus is highly regarded by all of our students and continues to work hard to improve our course offerings and raise the bar on instruction. 
Marcus Bronfeld
Master Instructor, Training Division
As our Master Instructor, Marcus brings “real world” experience to our training courses from combat Marine Veteran to Police Officer and Security Officer. He has worked plush world class venues to street level low-income housing assignments.
Eric T. Taeleifi
Corporate Operations
Eric is in charge of every day operations at our Oakland offices and has operational responsibilities of scheduling, live scan and ink fingerprinting, training, retail and communications.
Prior to joining The Loss Prevention Group, Eric held the position of Assistant Loss Prevention Manager at Sony, and has an extensive background in the guard force field. Eric is also a Certified Fingerprint Roller and is LPG's liason with BSIS (Bureau of Security and Investigative Services).
Prestina Trias
LPG Daly City - Identity Services
Prestina comes to us with an extensive background in customer service and operations. Prestina recently transferred to us from our Protection Division. Prestina is a Certified Fingerprint Roller and Certified Notary. Prestina is currently assigned to our Daly City LPG Identity Services Branch.
Mamadou Ndom
Customer Service and Operations
Mamadou has an extensive private and public security background, which he uses to help our students and customers. Mamadou still serves a large Bay Area city with his security services and knowledge.
Mamadou is a Certified Fingerprint Roller with the State of California.
William Walters
Operations/Instructor, Training Division
William comes from a law enforcement background with patrol experience, as well as an EMT Supervisor and is also an active Paramedic. William is also SCUBA/Open Water Diver certified.
William is a Certified Instructor for Basic Gurad Card Training, CPR/First Aid/AED as well as OCAT®, PATH®, and Taser®.
William is also assigned to the Operations Division of LPG where he conducts client security site visits to ensure quality control as well as checking in with our staff. William is also a Certified Fingerprint Roller with the State of California..
William continues to receive great feedback from all of our students and clients and continues to be a very valuable asset to LPG. William is also a San Francisco Radio Personality, hosting his own weekly radio show.
John Stretch
Instructor, Training Division
John is a retired police officer after 24 years with an east bay law enforcement agency. While in law enforcement John was the primary instructor in weaponless defense, handcuffing, and impact weapons for his department. During his career John was a crime prevention officer providing public education in areas of personal, child safety, physical security, business security, and CPTED (Crime Prevention Through Environmental Design.
John teaches Basic Guard Card Courses, CPR and Basic First Aid, as well as Baton Training for LPG.
Prior to law enforcement John worked in private security and was a Military Policeman in the U.S Army in the United States and Panama.
Robert Gonzales
Customer Service and Operations
Robert has an extensive background of customer service and currently serves in a support role with a local law enforcement agency. Robert obtained a Bachelors Degree in Computer Information Systems with a concentration in Computer Forensics.
Certifications and Associations:
- American Society of Industrial Security
- International Association of Financial Crimes Investigators
- Certified Homeland Security Specialist
- San Francisco Paramedics Association
- National Fire Protection Association
- John E. Reid and Associates Interview and Interrogation
- The American College of Forensic Examiners International
- International Fire Marshall's Association
- National Rifle Association
- Medic First Aid
- American Safety and Health Institute
- Oakland Metropolitan Chamber of Commerce
- California Reserve Peace Officers Association
- California Police Officers Association
- National Registry of Emergency Medical Technicians
- Northern California Fraud Investigators Association
- P.O.S.T. Certified Public Safety Background Investigations
- National Shoplifting Prevention Coalition