Insights

Targeted Security Expertise National SIU specializes in surveillance and covert investigations for private and corporate clients, suggesting strong potential for cross-sell of advanced investigative services to risk management, legal, and insurance departments seeking evidence-backed results.

Coast to Coast Reach With coast-to-coast coverage and a worldwide network of investigative specialists, there is an opportunity to engage large enterprises and multi-regional clients requiring consistent investigations across jurisdictions.

Prime Revenue Range Reported revenue between one and ten million places NSIU in a growth-ready quadrant; potential for up-selling premium services, retention programs, or bundled investigations for scale-focused customers in insurance, corporate security, and legal services.

Tech Stack Leverage Reliance on established tools like WordPress and Microsoft 365 indicates openness to digital engagement; there is room to propose enhanced client portals, secure case management, and data protection enhancements to differentiate offerings.

Market Positioning Operating in security and investigations with a high-visibility outcomes claim positions NSIU to pursue partnerships with mid-to-large firms in industries that require covert intelligence, risk assessment, and evidence gathering, such as insurance, legal, and corporate risk management.

Similar companies to National SIU

National SIU Tech Stack

National SIU uses 8 technology products and services including WordPress, Microsoft 365, Google Fonts API, and more. Explore National SIU's tech stack below.

  • Content Management System
  • Google Fonts API
    Font Scripts
  • jQuery Migrate
    Javascript Libraries
  • PHP
    Programming Languages
  • Security
  • YouTube
    Video Players
  • Apache
    Web Servers

National SIU's Email Address Formats

National SIU uses at least 3 email formats:
National SIU Email FormatsExamplePercentage
FLast@nsiu.comJDoe@nsiu.com
38%
First@nsiu.comJohn@nsiu.com
37%
First.Last@nsiu.comJohn.Doe@nsiu.com
25%

Frequently Asked Questions

What is National SIU's phone number?

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You can contact National SIU's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is National SIU's official website and social media links?

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National SIU's official website is nsiu.com and has social profiles on LinkedIn.

How much revenue does National SIU generate?

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As of October 2026, National SIU's annual revenue is estimated to be $1M - $10M.

What is National SIU's SIC code and NAICS code?

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National SIU's SIC code is 7381 - Detective, Guard, and Armored Car Services and NAICS code is 5616 - Investigation and Security Services.

How many employees does National SIU have currently?

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As of October 2026, National SIU has approximately 10 employees across 1 continents, including North America. Key team members include : R. K. Explore National SIU's employee directory with LeadIQ.

What industry does National SIU belong to?

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National SIU operates in the Security and Investigations industry.

What technology does National SIU use?

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National SIU's tech stack includes WordPress, Microsoft 365, Google Fonts API, jQuery Migrate, PHP, Imperva, YouTube and Apache.

What is National SIU's email format?

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National SIU's email format typically follows the pattern of FLast@nsiu.com. Find more National SIU email formats with LeadIQ.
National SIU logo

National SIU

Security and InvestigationsIllinois, United States2-10 Employees

National SIU is a private security and investigations firm based in Schaumburg, Illinois, offering investigative solutions for private individuals and corporate clients. The company specializes in surveillance and covert investigations, aiming to produce results with evidence and strategies that align with industry expectations, and it claims the ability to cover coast to coast through a network of investigative specialists. With a focus on providing detailed findings, the firm serves clients seeking dispute resolution, risk assessment, or corroborating information, across a broad geographic scope. The organization operates in a niche of professional investigations and is positioned to support clients needing discreet, efficient investigations delivered with practical outcomes.

Section iconCompany Overview

Phone number
Website
nsiu.com
SIC Code
7381 - Detective, Guard, and Armored Car Services
NAICS Code
5616 - Investigation and Security Services
Employees
2-10

Section iconFunding & Financials

  • $1M - $10M

    National SIU's revenue is estimated to be in the range of $1M - $10M

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