About National Security Service, LLC
National Security Service, LLC (often branded as NSS or GuardsToGo) is a New York–based private security firm that supplies licensed armed and unarmed security guards, mobile patrols, fire watch, and event security services nationwide. The company holds a New York State Watch Guard Agency license and operates a network of hundreds of field offices across all 50 states, serving sectors such as retail, healthcare, financial services, education, construction, hospitality, government, and residential communities.([guardstogo.com](https://www.guardstogo.com/?utm_source=openai))
A charge from “NATIONAL SECURITY SVC” on a card statement is typically related to contracted security guard services provided to a business, organization, property owner, or event organizer. This could reflect short‑term coverage (such as event or construction-site security), ongoing guard contracts for buildings or communities, or specialized services like fire watch or mobile patrols. In some cases, particularly for government or institutional clients, the charge may be associated with a project-based or contract-based invoice processed by card instead of via check or ACH.([guardstogo.com](https://www.guardstogo.com/armed-security-guards/?utm_source=openai))
To verify or resolve questions about a charge, cardholders should first confirm whether they are associated with a business, HOA, organization, or event that recently engaged outside security services. Reviewing invoices, contracts, or email confirmations from NSS/GuardsToGo and matching them to the transaction date and amount can help clarify the charge. If there is still uncertainty, customers can contact National Security Service via the phone and email listed on guardstogo.com, provide the transaction details (date, amount, last four digits of card), and request a copy of the related invoice or service order. If a charge appears unauthorized and cannot be matched to any known engagement, cardholders should promptly dispute it with their bank or card issuer after attempting to contact NSS.([guardstogo.com](https://www.guardstogo.com/contact-us/?utm_source=openai))