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SPI Keeps Your Workplace Safe

The security of your business is critical. We offer professional expertise across multiple businesses, as well as various security options to fit your specific needs. It’s this experience that makes us a top security company.



Uniformed Security

Uniformed security guards act as a deterrent to potential criminals, are quickly spotted in an emergency and provide peace of mind. SPI hires and trains professional, proactive uniformed guards and manages them so you don’t have to.

Loss Prevention

We develop and implement policies and procedures at your business to help you reduce and prevent loss before it happens. Whether you need a new strategy, or need professionals to execute on your current strategy, SPI has the loss prevention specialists you need.

Special Security Services

SPI understands that an out-of-the-box solution will not work for every business. That’s why we perform a customized risk profile to create and execute the best security strategy for your unique business needs.

Our Experience

Since 1971, SPI has served a wide variety of businesses in Southeastern Wisconsin. As a local security leader, SPI has experience providing protection and other special security services across many industries. Over the last four decades, we have worked hard to establish ourselves as an effective and respected security firm. Our clients are our number one priority and you can rest assured that our officers, consultants, and other professional team members will report to duty on time, work hard, and handle every situation with respect and competence.

Here are some of the industries we serve:


Office Buildings






Nursing Facilities


Apartment Communities


Retirement Communities




Manufacturing Facilities


Transportation Facilities




Industrial Facilities


Construction Sites


Our proactive and professional team is prepared to ensure the security of your business. SPI’s trained officers are here for you when you need them, responding to your security demands when it matters most. Whether you are looking for a security team for a short-term job or are in need of long-term assistance, we are here for you. In business for more than 40 years, SPI has done it all.

If you’ve ever worked with a security firm in the past, chances are you’ve experienced some level of disappointment. When you choose SPI, your satisfaction is guaranteed. We are responsive, respectful, intuitive, and have years of experience working in a wide range of industries. In addition, we have the resources and contacts necessary to ensure the safety of your business and employees.


SPI Meets Custom Loss Prevention Needs For Large Grocery Change

One of Wisconsin’s largest grocery chains had experienced underperforming security services from a number of companies, including several well-known national security firms.

SPI appointed an account manager and a dedicated loss prevention manager to properly manage the specific needs of the client. Security services performed include:

Uniformed security
Loss prevention
Mobile patrol
SPI officers wear a variety of uniforms, each one appropriate for the clientele of the store and each neighborhood.

Billing is also tailored to their needs … in this case the convenience of one invoice per week for all of their locations.

SPI Provides Access Control and Inservice Training For Government Services Contractor

A large national government services contractor with multiple local offices has used SPI successfully for a decade to help with crowd and access control at their locations.

In response to this client’s concerns, SPI brought in a consultant to provide in-service training to the client’s employees in the area of workplace violence. This training session better prepared the clients’ employees in the event of an incident and also allowed them to better interact with the SPI security officers at their location.