Private Investigation

Private investigation is an indispensable resource for providing vital information to support critical decisions, protect assets, and mitigate risks.

We offer private investigators to verify insurance claims, investigate employee misconduct, track spouses, investigate domestic violence situations, and more. Additionally, we work with law firms to gather evidence for civil and criminal cases. Regardless of the purpose, Defender One’s private investigators are professional, discreet, and meticulous, adhering to all legal and ethical standards.

We offer a suite of services to clients across the Mid- Atlantic. Our investigators have the experience and training to provide you with the critical information you need, while meticulously adhering to all rules and regulations. We are committed to delivering exceptional and legally compliant services to our valued clients.


Background Checks

Thorough assessments of an individual’s personal, professional, and financial history to assist in making informed decisions during hiring processes, partnerships, or other engagements.

Surveillance & Counter-Surveillance

Discreet monitoring and observation of subjects, locations, or activities to gather information, as well as implementing measures to protect clients from unwanted surveillance.

Fraud Investigations

Detailed examination and analysis of suspected fraudulent activities, such as insurance fraud, financial fraud, or corporate fraud, to uncover evidence and support legal proceedings.

Asset Searches

Identification and location of tangible and intangible assets, such as real estate, bank accounts, and intellectual property, to support debt recovery, litigation, or other financial matters.

Due Diligence

Comprehensive evaluation of businesses, individuals, or transactions to identify potential risks, verify facts, and ensure compliance with legal and regulatory requirements.

Cyber Investigations

Utilizing advanced digital forensics techniques and tools to investigate cyber-crimes, data breaches, and online threats, while supporting clients in strengthening their cybersecurity posture.

Family & Domestic Investigations

Addressing sensitive matters such as child custody, infidelity, or missing persons, with the utmost discretion, empathy, and professionalism.

Litigation Support

Assisting law firms and legal professionals in gathering crucial evidence, locating witnesses, and providing expert testimony to support their cases.

Corporate Investigations

Identifying and addressing internal and external threats to businesses, such as employee misconduct, theft, or espionage, while offering recommendations for improving security and risk management practices

Risk Assessments & Security Consulting

Evaluating existing security measures, identifying potential vulnerabilities, and providing tailored recommendations for enhancing overall security and mitigating risks.


Defender One Security takes pride in offering top-tier private investigation solutions to our clients. Our team of investigators is proficient in the latest and most effective investigative techniques, boasting extensive field experience.

We’ll collaborate closely with you to ascertain the information you require and devise the most effective strategies to find the information you need. Upon completing the investigation, our team will compile a comprehensive report detailing their findings.

Our team’s responsibilities may encompass surveillance, undercover operations, interviews, in-depth research, and more:

  • Criminal Investigation
  • Fraud Investigation
  • Insurance Fraud Investigation
  • Surveillance Investigation
  • Missing Persons Investigation
  • Divorce Investigation


At Defender One Security we prioritize your safety and confidentiality. Our expert team is ready to assist you in gathering crucial data for your organization while maintaining strict confidentiality. Our fortified SUVs are available for safe transportation and we offer
executive guard protection, tour guide protection, and concierge
services to meet all your needs. Once you engage Defender One Security, we’ll create a tailored security plan for your organization.

Contact us today at 443-834-6697 to discuss our security services.

Cynthia Cox

Human Resources Manager

With 21 years of management experience across various industries, including staffing, transportation, small business ownership, accounting, and operations, Cynthia brings a wealth of knowledge and a robust skill set to Defender One. Her diversified background has equipped her with a keen understanding of multiple business domains, making her an invaluable asset to the team.

Matthew Goodman

Assistant Director of Operations
Matt currently serves as Defender One’s Assistant Director of Operations. Matt is responsible for the day-to-day operations of Defender One and works closely with the Director of Operations & Training to implement goals and objectives for the company. As a nationally certified School Resource Officer and Force Science Analyst, Matt brings an interpersonal and holistic approach to the industry. He holds a Bachelor’s Degree in Criminal Justice from York College. Outside of work, Matt is an avid outdoorsmen, spending time perfecting his landscaping skills. Matt also enjoys quality time with his wife Ashley, and two cats, Ollie and Leo, as well as watching the Baltimore Orioles and Ravens.

Jennifer Krieger

Director of Human Resources
Jen currently serves as Defender One’s Director of Human Resources, managing our HR and back end finance teams. Jen has 30 years of experience in healthcare benefits administration, retirement benefits, financial planning and human resources. Jen holds a Bachelor’s Degree in Accounting from the University of Maryland, College Park and a Master’s Degree in Finance from Loyola University. Jen prioritizes an employee focused and driven company, with an emphasis on client and employee satisfaction. Outside of work, Jen enjoys running, watching her daughter play Division 1 Lacrosse, and playing with her grand-dogs.

Jared Krieger

Director of Operations & Training
Jared currently serves as the Director of Operations & Training at Defender One. In this role, Jared is responsible for the overall operations and training of Defender One and its staff. Jared currently holds a Bachelor’s Degree in Homeland Security & Counterterrorism. Jared is board certified in Security Management and Board certified as a Physical Security Processional by the American Society of Industrial Security. Jared is also an accredited Law Enforcement instructor in the following disciplines: Firearms, OC Spray, Expandable Baton, Handcuff, Taser, Defensive Tactics, and Force Science Analytics. Outside of work, Jared enjoys traveling and spending time with his girlfriend and three dogs.

Jon Krieger

Jon is the President and Founder of Defender One. Jon started Defender One in 2009, with the goal of bridging the gap between conventional security guards and law enforcement. Jon had a long and distinguished career in a large metropolitan police department for over 30 years, holding supervisory positions in several units, including patrol, internal affairs, traffic and community outreach. Jon has a Bachelor’s Degree in Criminal Justice from the University of Maryland, College Park. Outside of work, Jon spends his time spoiling his grand-dogs Fred and Barney, supporting the Ravens and Orioles, and watching his daughter play Division 1 Lacrosse.