Investigations and Security Solutions Investigations, LLC


David Grinage, 


Mr. Grinage is a criminal justice professional with more than 34 years in law-enforcement and security. He is a retired detective sergeant from the New York Police Department. He spent more than half of his police career conducting/supervising investigations in areas such as burglaries, narcotics, background, internal affairs and organized crime. In addition to teaching New York Police Department professional development courses, he trained investigators in surveillance methods and plain-clothes street tactics. 

He served as an adjunct professor at St John’s University and is currently an adjunct at the Technical College Institute in New York where he teaches security management and criminal justice.  He also served as the director of security at a college that had 10 different campuses.

He has an Associate of Arts degree, a bachelor’s degree in criminal justice, a master’s degree in education and is a graduate of the FBI National Academy.Mr. Grinage is a NYS licensed private investigator and a NYS certified general topics police instructor.

Investigations and Security Solutions, LLC will approach every situation with discipline, honor, integrity and tenacity. In every case, we will  strive to provide the best possible service while operating within  the parameters of the United States Constitution and the laws of the State of New York.  Type your paragraph here.

Summary of Services

About Us

The Company


Investigations and Security Solutions, LLC (iandss) is a full service investigative and security company. We have been in business since 2001. The team of managers are all criminal justice professionals with investigative and security experience at the government and private level. Most are all NYPD retired investigators.

IandSS investigators are primarily former detectives with  numerous years of experience conducting a myriad of investigations; including fraud investigations, workman’s compensation claims, asset searches, infidelity cases, missing persons and a variety of other civil and criminal investigations.  These professionals also have a great deal of courtroom and testimony experience.

Investigations and Security Solutions, LLC specializes in conducting physical assessments and surveys. Using the leaderships experience and training, they look to identify any possible vulnerability, whether it is a sensitive location such as a church, military facility or a hotel/motel/inn or resort. Their mantra is “No threat should be taken for granted” and this company takes every threat seriously. The security specialist, investigators and lawyers at Investigations and Security Solutions, LLC, are experts in crime prevention strategies and liabilities. They have the expertise to identify potential threats and provide solutions that will increase safety and mitigate property loss, workplace violence and other safety and security issues.

Lastly, Investigations and Security Solutions, LLC; prides itself on having a unique blend of professional experiences, certifications and education. This combination allows their instructor to handle any training issue that may arise, whether it is the training of security guards by a NYS certified instructor, on the job training or classroom instructions. Investigations and Security Solutions, LLC believe this is a perfect formula to address our clients’ training and security needs.  

This company is licensed by the State of New York

The Front Line of Your Protection

Our Mission


Private Investigations

  • Asset Searches

  • Background Investigations

  • Civil Investigations

    • Workman’s Compensation

    • Insurance Fraud

  • Child Custody Investigations

  • Child Support Investigations

  • Criminal Investigations

  • Surveillances

  • Photographs

  • Video Recordings


  • Security Consulting/Contractual Security

  • Physical Security Surveys

    • Recommendations

    • Liability Consulting

Training (Coming Soon)

  • 8 hour training course

  • 16 hour training course

  • 40 hour outsourced investigative training

  • 40 hour Investigative training and preparatory course

  • Internships