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Chicago, IL  ·  Arlington Heights, IL  ·  Northwest Suburbs

Private Investigation
and TSCM

Head of Security partners with Chicago PI Services Group, a licensed Illinois private investigation firm, to deliver professional investigation, surveillance, fraud, process serving, and TSCM bug sweep services for clients across Chicago and the northwest suburbs.

Licensed Illinois agency
Surveillance and fraud
TSCM and bug detection
Process serving
Trusted partner relationship
About this service

A Trusted Partner, Not a Subcontractor

Head of Security LLC is a security risk management firm, not a private investigation agency. When clients need licensed investigation work, process serving, or TSCM bug sweeps, we coordinate directly with Chicago PI Services Group, a licensed Illinois private investigation firm based in Arlington Heights.

This is a long-standing partner relationship built on operational trust. Our clients get vetted, licensed investigation services from a firm we know, while continuing to work through their existing Head of Security engagement when that makes sense. One point of coordination, licensed expertise behind it.

Trusted Partner
Chicago PI Services Group
Licensed Illinois Private Investigation Firm

Chicago PI Services Group specializes in uncovering fraud, investigating infidelity, detecting electronic bugs, and providing professional process serving across Chicago and the northwest suburbs. Their team operates out of Arlington Heights and holds an active Illinois Private Detective Agency license.

Office
25 E. University Dr, Ste A
Arlington Heights, IL 60004
Agency License
#117.001738  (IL)
Services available

What Our Partner Delivers

Chicago PI Services Group provides the full range of licensed investigative services. Every engagement is handled directly by their team under their Illinois agency license.

Surveillance
Surveillance and Fraud Investigation
Professional surveillance operations, fraud investigation, workers compensation investigation, and insurance fraud documentation for individuals, corporations, and legal teams.
Infidelity
Infidelity Investigations
Discreet, experienced infidelity investigation for spouses and partners seeking the truth. Confidential, evidence-based reporting with legal-grade documentation.
TSCM
TSCM and Electronic Bug Detection
Technical Surveillance Counter Measures (TSCM) sweeps for private individuals and corporations. Detect hidden cameras, listening devices, GPS trackers, and unauthorized electronic surveillance.
Process Serving
Professional Process Serving
Legally compliant process serving across Illinois with prompt, reliable service and proper documentation. Supports law firms, corporate legal, and individual clients.
Background
Background Investigations
Comprehensive background investigations for employment, relationships, business dealings, and pre-litigation due diligence work.
Corporate
Corporate Investigations
Internal theft, policy violations, litigation support, counter-surveillance sweeps, and executive protection intelligence for corporate clients.
How it works

Coordinating Through Head of Security

Our clients can engage Chicago PI Services Group directly or coordinate through Head of Security. Many clients choose the coordination route when an investigation is part of a broader security engagement.

01
Initial Intake
Contact Head of Security or Chicago PI Services Group directly. We will ask a few scoping questions to understand what you need and whether it fits a standalone investigation or a broader security engagement.
02
Scope and Confidentiality
Chicago PI Services Group reviews the matter, establishes formal engagement terms, and executes confidentiality agreements. All client information is handled under their Illinois agency license.
03
Investigation Execution
Their team runs the investigation directly, using licensed investigators, legally compliant methodology, and professional documentation standards appropriate to the matter.
04
Reporting and Integration
Findings are delivered directly to the client through Chicago PI Services Group. When the engagement is coordinated through Head of Security, we integrate findings into your broader security program with your consent.
Why the partnership

The Right Work Done by the Right Firm

Private investigation is a regulated profession in Illinois. Doing it properly requires state licensure, legal compliance, and experience that sits outside the risk management and protective services focus of Head of Security. Rather than cut corners or act outside our lane, we partner with professionals who do this work every day.

Licensed and compliant

Chicago PI Services Group holds an active Illinois Private Detective Agency license and operates under the regulatory framework for investigations in the state.

Specialized expertise

Infidelity investigation, TSCM, surveillance, and process serving all require specialized tradecraft that their team runs every week. We do not pretend to be generalists.

Seamless coordination

When an investigation connects to executive protection, threat risk assessment, or workplace violence prevention, we coordinate the handoff so nothing falls between the cracks.

Direct access when you want it

Clients who prefer to engage Chicago PI Services Group directly without going through Head of Security can do so anytime. The partnership is a convenience, not a gate.

Common questions

Private Investigation FAQ

Is Head of Security a private investigation firm? +

No. Head of Security LLC is a security risk management and protective services firm. We do not hold a private detective agency license and do not perform licensed private investigation work directly. For clients who need investigation, surveillance, TSCM, or process serving, we coordinate with our trusted partner Chicago PI Services Group, which is a licensed Illinois private detective agency.

Why partner with Chicago PI Services Group? +

Investigations require specialized expertise, state licensure, and legally compliant methodology. Chicago PI Services Group holds an active Illinois agency license (#117.001738) and has a strong track record in surveillance, fraud, infidelity, TSCM, and process serving. Rather than stretch our capabilities outside our core focus, we partner with a firm that does this work at a high standard every day.

Can I contact Chicago PI Services Group directly? +

Yes. Clients are welcome to contact Chicago PI Services Group directly at (847) 777-0266 or through their website at chicagopiservices.com. The partnership is for coordination convenience. It is not a gate or a referral fee arrangement. If your need is purely investigative and unrelated to a broader security program, going directly to them is often the faster path.

When does it make sense to coordinate through Head of Security? +

Coordination through Head of Security makes sense when an investigation is part of a broader security engagement. Examples include a TSCM sweep that accompanies executive protection, a background investigation that supports a workplace violence threat assessment, or surveillance that connects to a corporate security concern. In those cases, having one coordination point keeps findings integrated into your overall program.

What is TSCM and when do people need it? +

TSCM stands for Technical Surveillance Counter Measures. It is the professional detection of hidden cameras, listening devices, GPS trackers, and other unauthorized electronic surveillance. Common situations include suspected corporate espionage, sensitive meeting spaces, executive residences, divorce and family law matters, and environments where privacy has been compromised. Chicago PI Services Group operates a professional TSCM practice as part of their core service set.

Is my information kept confidential? +

Yes. Chicago PI Services Group operates under strict confidentiality and client privilege standards appropriate to a licensed Illinois investigation agency. Information shared in connection with an investigation is not disclosed to third parties except as required by law or agreed with the client in advance. The same confidentiality standard applies when coordination is routed through Head of Security.

Two Paths, One Standard

Start with a consultation through Head of Security or contact Chicago PI Services Group directly. Either way, you get licensed, professional investigation work handled the right way.

Chicago, IL
Arlington Heights, IL
Schaumburg, IL
Northwest Suburbs
Chicagoland
Illinois
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