Company lists · Data refreshed September 2026
Top 24 Security monitoring services based in New York, United States
RevenueBase identified 116 security monitoring services headquartered in New York, United States as of September 2026 and tracks 3,257 professional contacts across them, including 1,193 with verified work emails. New York is the largest hub.
This list covers security monitoring services headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 24 largest security monitoring services based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 683 | ||||
“BlueVoyant’s Cyber Defense Platform (CDP) integrates MDR, TPRM, and DRP into a seamless, scalable solution.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 571 | ||||
“Allied Universal Enhanced Protection Services delivers unrivaled threat mitigation expertise for government and business entities worldwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 265 | ||||
“Flashpoint is the leader in threat data and intelligence.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 206 | ||||
“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 200 | ||||
“Agio is a hybrid cybersecurity and managed IT organization that combines predictive intelligence with human brilliance to empower clients with next-generation cyber protection and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 120 | ||||
“Excel Security Corp.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 82 | ||||
“For over 30 years GMSC has been securing high profile buildings and offices across New York and Chicago.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 82 | ||||
“Security USA®, Inc.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 76 | ||||
“NopalCyber makes cybersecurity manageable, affordable, reliable, and powerful for companies that need to be resilient and compliant.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 72 | ||||
“ADR Security is the leading provider of electronic and physical security services to some of New York's largest residential real estate portfolios.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 55 | ||||
“Port53 Technologies is The Global Leader in Cisco-Based Managed Security Operations, helping organizations modernize and secure their digital environments through advanced…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 36 | ||||
“OHZ is America’s way to secure and save.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Monitex SecurityPartial evidence | 35 | |||
“Your property secured 24/7 Our services: Construction Site Monitoring: Use real time, Live video surveillance to Prevent property damage, equipment theft, and injury liability…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 28 | ||||
“CipherTechs is now part of CyberMaxx, a tech-enabled cybersecurity service provider.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 23 | ||||
“Target Security Systems, LLC is New York City’s leading provider of cutting edge, high security solutions customized for today’s business and private sectors.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 | ||||
“ACA Aponix, a division of ACA Group, provides cybersecurity and technology risk assessments, vendor and M&A diligence services, network testing, and advisory services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 18 | ||||
“We help busy organizations provide maximum security with simple but sophisticated solutions which enable them to have everything under control.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 17 | ||||
“Cohere offers managed security and IT infrastructure services all under one roof.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 17 | ||||
“IntSights delivers best-in-class, cloud-native external threat detection to further extend Rapid7’s industry-leading security operations platform, providing customers with…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 16 | ||||
“Unit 221B is a threat disruption company delivering actionable threat intelligence and cybersecurity solutions that enable enterprises, law enforcement, and government agencies to…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Sight Watch SecurityStrong evidence | 13 | |||
“At SightWatch Security, we deliver proactive and trusted security solutions-from perimeter assessments to camera installation and real-time 24/7 monitoring.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 12 | ||||
“We’re the nemesis of evil hackers attempting to take control of your system so they can extort money.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Silent BreachIndirect evidence | 12 | |||
“At Silent Breach, we think like a hacker and defend like a pro.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 11 | ||||
“Analytica42 isn’t just a service provider; we’re a trusted partner in your security operations.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 24 of 116 security monitoring services based in New York, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,193 reachable decision-makers.
Free signup · no credit card
Security monitoring services based in New York, United States at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 116 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security monitoring services, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in New York, United States whose own description of what they do matches “security monitoring services”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security monitoring services, and records with no verified work email. Companies headquartered outside New York are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,193 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Security monitoring services by metro in the United States
- Security monitoring services in New York116
- Security monitoring services in Miami82
- Security monitoring services in Houston79
- Security monitoring services in Dallas63
- Security monitoring services in Los Angeles58
- Security monitoring services in Austin54
- Security monitoring services in Chicago46
- Security monitoring services in Phoenix44
- Security monitoring services in Atlanta40
- Security monitoring services in San Francisco40
- Security monitoring services in Las Vegas39
- Security monitoring services in Denver35
- Security monitoring services in Charlotte34
- Security monitoring services in San Diego33
- Security monitoring services in Tampa31
- Security monitoring services in Wilmington30
- Security monitoring services in Washington28
- Security monitoring services in Baltimore27
- Security monitoring services in Columbia27
- Security monitoring services in San Jose27
- Security monitoring services in Scottsdale25
Frequently asked
How many security monitoring services are there based in New York, United States?
RevenueBase identified 116 security monitoring services headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Bluevoyant, headquartered in New York, tops this list with the largest team on record.
Which city has the most security monitoring services?
New York leads with 116 headquartered companies, followed by Miami (82) and Houston (79).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,193 verified decision-maker contacts tracked across these 116 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 116 security monitoring services based in New York, United States. Start with a free account, no credit card.
Get the full listRelated lists
Security monitoring services by geography
- Security monitoring services based in the United States
- Security monitoring services based in the United Kingdom
- Security monitoring services based in Brazil
- Security monitoring services based in France
- Security monitoring services based in Canada
- Security monitoring services based in Australia
- Security monitoring services based in Germany
- Security monitoring services based in Italy
- Security monitoring services based in Spain
- Security monitoring services based in the Netherlands
- Security monitoring services based in South Africa
- Security monitoring services based in Mexico
Browse the directory
Browse: Companies home · Security monitoring services in United States · All United States lists · All Security monitoring services lists · New lists
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Security monitoring services based in the United States
- Security monitoring services based in the United Kingdom
- Security monitoring services based in Brazil
- Security monitoring services based in France
- Security monitoring services based in Canada
- Security monitoring services based in Australia