Trust, Honesty and Integrity are the foundation of ISGS client services.  These values were earned as FBI Special Agents, Law Enforcement Officers, Intelligence Specialists and Military Operatives.

ISGS endeavors to complete our clients' objectives in the most cost effective, productive and timely manner.

ISGS is comprised of former Special Agents of the FBI, other federal agency agents/analysts/officers, Department of Defense/Military Special Operations personnel, Corporate Security Professionals and other state and local agency professionals. We provide local/statewide/national/ international investigative and security capabilities to assist individuals, families, corporations, small businesses and law firms negotiate today's complex risks.

The team members and associates of ISGS are selected from an array of talent, from particular government agencies and the corporate sector, who bring their unique skills and abilities to individually and/or collectively "get the job done." We are designed and committed to effectively and efficiently accomplish complex tasks.

Each team member is selected based on his or her known experience and reputation as an investigator and/or security expert who will dedicate the effort and tenacity to obtain the highest quality results within the parameters provided.

Our associates are imbued with a sense of service and a desire to help, having previously served as public servants for decades.

Dennis Franks/President/732.960.2621/dfranks@isgs.us/TX PSB License # C15409






ISGS offers a full range of investigative services whenever a client requires a professional, thorough, discrete, confidential, fact based inquiry.  No matter is too small or too complex. 

  • Asset Determination/Verification
  • Background Investigations
  • Computer Forensics
  • Counterintelligence Investigations
  • Covert/Undercover Investigations
  • Disgruntled Employee Threat Investigations 
  • Due Diligence Investigations
  • Foreign Corrupt Practices Act Compliance
  • Fraud Examinations
  • Human Trafficking Investigations
  • Interviewing and Witness Locating
  • Kidnapping & Ransom Investigations
  • Litigation Support
  • Missing Persons Investigations
  • Patent Infringement Investigations
  • Non-Compete Investigations
  • Proprietary Information Theft Investigations
  • Stalker Investigations
  • Surveillance
  • Theft Investigations
  • Trade Secret Theft Investigations

​​ISGS associates draw upon their decades of experience and training as FBI Special Agents, having conducted thousands of interviews and managed hundreds of major investigations, where the most sophisticated methods, techniques, and equipment were employed against the most hostile criminal and national security threats.

ISGS investigators are experts in surveillance, witness interviews, evidence collection, information analysis and major case management.  

Highly decorated former FBI and other Covert/Undercover Operatives are used in appropriate investigations. 

These Operatives have conducted the most sensitive international investigations in the national security and intelligence arenas.

ISGS can employ either ordinary or sophisticated investigative methods to meet our client’s particular requirements.  

Every matter is handled and documented as though it would require sworn expert testimony in a civil or criminal court of law.


What security risks threaten your family or organization, putting your life or assets in jeopardy?  With decades of experience in all aspects of asset protection, ISGS security professionals are  exceptionally qualified to identify critical security vulnerabilities and make recommendations.

  • Armed Security Officer - Federal Air Marshall Service (Corporate)
  • Business/Estate/Home Security Consultation - Risk and Vulnerability Assessments
  • Continuity of Operations
  • Cyber Security 
  • Electronic Eavesdropping Countermeasures
  • Estate Security
  • Event and Guard Services
  • Executive and Personal Protection
  • Home Land Security Grant Program Application Assistance
  • Insider Threat Assessments
  • Maritime Transportation Security Act (MTSA) Compliance
  • Oil/Energy Company Security Vulnerability Assessments
  • ​Oil Field Security
  • Ranch Security
  • Security Training
  • Special Event Planning
  • Transportation Workers Identification Credentials (TWIC) Compliance
  • Travel Advisories and Security Measures
  • Workplace Violence Countermeasures

In conducting Security Vulnerability Assessments, ISGS considers existing and  potential threats to assess your exposure and recommends ways to better secure personnel, operating systems and facilities, thereby reducing liabilities. 

ISGS physical and infrastructure security personnel, with decades of  government and corporate security experience, are used to determine vulnerabilities and work with clients to make cost sensible improvements to  company and residential security systems and structures. 

ISGS Continuity of Business Plans are offered so you and your business can survive and recover from a crisis.

ISGS information security experts vigilantly monitor the ever changing threats facing information technology (IT) and provide IT security consulting services in all aspects of network and digital security, including design, architecture, operational procedures, management, incident response, vulnerability assessments and authorization compliance.