Insights

Niche Surveillance Small, specialized investigations firm with coast to coast reach and a network of specialists presents an opportunity to offer enhanced private security services, covert operation tools, and bespoke due diligence packages to mid-market and high-net-worth clients seeking discreet risk assessment.

Growth Potential Revenue range indicates a growing operation; sales outreach can focus on expanding coverage across industries that require ongoing investigations such as corporate risk, executive protection, and compliance monitoring, aligned with scalable service tiers.

Tech Enablement Current tech stack shows familiarity with common enterprise tools; opportunities exist to upsell security analytics, evidence-management platforms, case management software, and premium data-security services to improve operational efficiency and data protection.

Security Focus Industry focus on security and investigations primes cross-sell for cybersecurity assessments, surveillance technology audits, and incident response services aimed at clients with sensitive information and regulatory concerns.

Strategic Partnerships Presence of a worldwide network offers a path to co-sell with larger risk-management and insurance players, law firms, and corporate security providers to expand client reach and win larger, multi-region engagements.

National SIU Tech Stack

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

  • RSS
    Content Management System
  • Microsoft 365
    Email
  • Google Fonts API
    Font Scripts
  • jQuery Migrate
    Javascript Libraries
  • Office 365
    Office Suites
  • PHP
    Programming Languages
  • Imperva
    Security
  • Apache HTTP Server
    Web Servers

National SIU's Email Address Formats

National SIU uses at least 1 format(s):
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 July 2026, National SIU's annual revenue is estimated to be $1M - $10M.

What is National SIU's NAICS code?

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National SIU's NAICS code is 5616 - Investigation and Security Services.

How many employees does National SIU have currently?

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As of July 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 RSSMicrosoft 365Google Fonts APIjQuery MigrateOffice 365PHPImpervaApache HTTP Server.

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
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

Section iconFunding & Financials

  • $1M - $10M

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

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