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Security Guard Company

Code 3 Security is the largest privately-owned security guard company in the region, serving Maryland, Washington D.C. and the entire Mid-Atlantic, with operations undertaken in Florida.

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Our Services

Security Guard Services

Code 3 Security provides uniformed security guard services for Commercial, Retail, & Government facilities, available 24 hours a day, 7 days a week, throughout the year. Click here to learn more.
Remote Video Monitoring

Utilizing the latest in digital video surveillance equipment, Code 3 Security can monitor your location remotely with solutions customized to your needs. Click here to learn more.
Executive & VIP Protection

Code 3 Security has an impeccable track record of providing protection to executives, dignitaries, and VIP’s, at home and abroad. Click here to learn more.
Security Training

At Code 3 Security we are committed to the continual development and training of our personnel. Our training curriculum is also open to others seeking knowledge and certification. Click here to learn more.
Private Investigations

Code 3 Security employs personnel with backgrounds in law enforcement and all branches of the military, with extensive knowledge of investigative techniques. Click here to learn more.
Off-Duty Police

Experience in law enforcement is a valuable asset to any private security officer. If you’re looking to hire off-duty, former, or retired police officers, click here, click here to learn more.

About Us

Code 3 Security is one of the region’s premiere security guard services firms.

We secure the safety of thousands including; employees, tenants, diplomats, investors, and shareholders in a wide array of industry settings. Clients currently utilize our services in a number of venues, ranging from apartment complexes to technological facilities.
Current Employees
Code 3 Security employs more than 500 people, making the company one of the region’s largest privately held security service firms.
Client Sites Served
With operations originating in Maryland, Code 3 Security now services multiple regions, from the Mid-Atlantic to Florida. We have provided security to more than 1000 client sites.
Time to Proposal
4 HR
Code 3 Security prides itself on 24-7 service, and rapid response. Once an inquiry is made, we are typically able to respond with a proposal in 4 hours for your approval.

One of the Regions Largest Private Security Companies Since 2002

Code 3 Security was founded in 2002 and incorporated in 2004. The company is privately owned and has never utilized revenue from capital investments to achieve its position in the market place. Code 3 Security is solely owned by Mr. Keith Lynn who serves as the company’s President and Chief Executive Officer.

Quality Personnel

Quality Training

World Class Security Service Delivery


With 24-7 on-call service and full accountability for all our personnel through our GuardTrax guard tracking system, you can rest assured of a successful partnership with Code 3 Security.

Or request a quote by calling: 844-741-6022