ETS is one of the leading Private Detective & Security Agencies in the United States
We provide best-in-class service to clients including major law firms, insurance companies, corporate America, closely-held companies & high-net-worth individuals, governments, school districts, law enforcement agencies, aviation industry, logistics & transportation industry, and religious organizations.

The ETS team and I continually strive to exceed client expectations in every matter.

Whether you have an immediate need, are shopping for an expert witness, have an open RFP, or just looking to improve on a current process in your company, we want to hear from you. Our team of over 20 investigators and security consultants in the Chicago area and several hundred more nationwide can handle all types of tasking including cell phone and computer forensics, social media and online investigations, due diligence investigations, surveillance, and hostile termination security right down to day to day services like background checks and process serving.

Thanks for checking us out! We look forward to hearing from you!

David Ratkovich, LPD LSC CCDI



Background Checks

human resources
employment screening
background checks
criminal records check

Existing screening clients click below to access our secured portal to enter your background search requests.

New Clients: (847)665-0400 to get set up!

Hire ETS


New matter? No Problem!

The link below takes you to our online case assignment portal. We'd love a phone call or an email too if that's easier!

Livescan Fingerprinting

private detectives
private investigators
security guards
off-duty police
background checks

10 N. Martingale Rd Suite 400

Schaumburg, IL 60173

(847) 665-0400 or