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76 leading cybersecurity companies in New York State

Tamtam tracks 76 cybersecurity companies headquartered in New York State. This list ranks all of them by number of employees on LinkedIn, led by IBM, Kyndryl and Datadog. Their median headcount is 261. Half of them were founded in 2015 or later. The most common headquarters are New York (64) and Hauppauge (2).

๐Ÿ‡บ๐Ÿ‡ธ New York State76 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
IBMibm.com

It focuses on collaboration among technologists, developers, and engineers to improve technology, infrastructure, software, and consulting for better solutions.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Armonk 335,625 n/a
2
Kyndrylkyndryl.com

A global leader in designing, running, and managing advanced technology infrastructure, focusing on excellence, innovation, and advancing vital systems for human progress

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 90,000 2021
3
Datadogdatadoghq.com

Provider of essential monitoring platform for cloud applications, consolidating data from various sources to ensure optimal performance and user experience for DevOps teams

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 10,888 2010
4
Ziff Davisziffdavis.com

Digital media and internet company with brands in technology, shopping, gaming, entertainment, health, connectivity, cybersecurity, and marketing technology.

Technology, Information and Media ๐Ÿ‡บ๐Ÿ‡ธ New York 6,688 n/a
5
Presidiopresidio.com

A technology and innovation-driven company with expertise in automation, security, networking, digital transformation, and cloud computing, providing custom applications and managed services globally

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 4,355 n/a
6
Entrustentrust.com

Provides identity-centric security solutions, protecting people, devices, data. Fights fraud, cyber threats, secures identity lifecycle, ensures transaction confidence. Global presence, 150 countries.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Minneapolis 3,755 n/a
7
Westcon-Comstorwestconcomstor.com

Global technology distributor connecting leading IT vendors with technology resellers worldwide, delivering business value and driving success through industry insight and distribution experience

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Tarrytown 3,263 1985
8
Wizwiz.io

Identifies, removes critical risks across AWS, Azure, GCP, OCI, Alibaba Cloud, and Kubernetes for building faster and more securely.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 3,147 2020
9
CLEARclearme.com

Security identity platform enabling safer, easier experiences in airports, stadiums, healthcare, travel, and financial services with trusted solutions.

Consumer Services ๐Ÿ‡บ๐Ÿ‡ธ New York 2,936 2010
10
NYS Office of Information Technology Servicesits.ny.gov

Transforming government services in New York State, focusing on innovation, efficiency, and competitiveness through technology and a culture of creativity

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Albany 2,611 n/a
11
PKF O'Connor Daviespkfod.com

Leading accounting, tax, and advisory firm serving domestic and international clients with a focus on delivering high value, expertise, and service

Accounting ๐Ÿ‡บ๐Ÿ‡ธ Harrison 1,718 1891
12
Cyeracyera.com

Enables global enterprises to adopt AI at scale by securing the data fueling it, providing precise visibility and intelligent controls for data everywhere.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 1,626 2021
13
OffSecoffsec.com

The company empowers individuals worldwide to combat cyber threats by providing essential cybersecurity skills and resources for a secure future

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 1,142 2006
14
Fireblocksfireblocks.com

Provides scalable, secure digital asset infrastructure, streamlining payments, custody, tokenization, and trading for institutions across 100 blockchains, unlocking new use cases.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 970 n/a
15
DCI

Providing technology and cybersecurity solutions to the alternative assets community since 1999

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Ny 941 1999
16
Dataminrdataminr.com

Utilizing real-time AI and public data, this company provides clients with actionable alerts to detect high-impact events and emerging risks globally

Technology, Information and Internet ๐Ÿ‡บ๐Ÿ‡ธ New York 891 2009
17
Feedzaifeedzai.com

Powers trust in global finance with an AI-native financial crime prevention platform, protecting moments where money matters most at massive scale.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 869 2011
18
Clarotyclaroty.com

Redefines cyber-physical systems protection with an industry-centric platform for mission-critical infrastructure, providing asset visibility, network protection, secure access, and threat detection.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 861 2015
19
Axoniusaxonius.com

Provides asset intelligence platform for unified security operations and exposure management. Offers a single source of truth for assets and exposures.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 723 2017
20
Forterforter.com

The company provides a Trust Platform for digital commerce, helping enterprises increase revenue and reduce fraud by making real-time decisions about digital interactions

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 706 2013
21
Abacusabacustechnology.com

Global IT and cybersecurity managed services provider specializing in integrated technology and security solutions for financial services firms.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 649 2008
22
BigIDbigid.com

Connecting data and AI for security, privacy, compliance, and governance, securing entire data landscapes across multicloud, hybrid, SaaS, and on-prem.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 627 2016
23
BlueVoyantbluevoyant.com

Offers a cloud-native platform integrating MDR, TPRM, DRP for real-time threat monitoring across networks, endpoints, and supply chains, utilizing AI and human expertise.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 624 2017
24
SecurityScorecardsecurityscorecard.com

Provides patented cybersecurity rating technology for risk management, third-party oversight, board reporting, and cyber insurance underwriting globally.

Data Security Software Products ๐Ÿ‡บ๐Ÿ‡ธ New York 624 2013
25
CCScustomonline.com

Providing reliable technology solutions including cybersecurity, managed services, cloud, software, and network management for diverse US organizations.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Hauppauge 615 1979
26
Privado AIprivado.ai

Privado helps enterprises prevent privacy breaches and fines by scanning code, monitoring data flow, creating data maps, and alerting on potential breaches

Technology, Information and Internet ๐Ÿ‡บ๐Ÿ‡ธ New York 604 2020
27
RFArfa.com

Provider of secure, customized IT, cloud, and cybersecurity solutions for financial services and alternative investment sectors worldwide.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 603 1989
28
Proveprove.com

Prove offers phone-centric identity solutions to businesses, helping them verify customers securely, reduce fraud, and enhance consumer privacy worldwide

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 601 2008
29
Alignalign.com

A global provider of technology infrastructure solutions and managed IT services, specializing in data center deployment and project management

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 572 1986
30
Veriffveriff.com

Leading global identity verification partner for top digital companies in fintech, crypto, gaming, and mobility sectors Offering advanced technology and worldwide ID coverage

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 542 2015
31
BioCatchbiocatch.com

Prevents financial crime. Recognizes patterns in human behavior. Collects anonymized data points. Machine learning models detect criminal activity. Protects banking users.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 457 2011
32
Torqtorq.io

Combines AI-powered insights and automation for Security Operations Centers, streamlining threat triage, investigation, and response from alert to resolution.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 454 2020
33
Alloyalloy.com

Alloy provides an end-to-end identity risk management platform for companies offering financial products, helping manage fraud, credit, and compliance risk

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ New York 416 2015
34
Dashlanedashlane.com

Provides complete credential security, protecting businesses against human risk. Its intelligent Omnix platform unifies credential protection and password management for employees.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 314 2009
35
Atlas Technicaatlastechnica.com

A Managed Service Provider specializing in IT Support and CyberSecurity services for the Alternative Investment industry, delivering innovative solutions and outstanding client-centered service

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 303 2016
36
VSS, A Converge Companypellera.com

IT solutions and services provider leveraging people, process, and technology to transform businesses, offering sustainable technologies, IT expertise, and project execution for clients

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 270 1990
37
Avalonteamavalon.com

Specializing in litigation support, secure print and mail, cybersecurity, and managed office services to help businesses succeed through expert solutions and exceptional customer service

Legal Services ๐Ÿ‡บ๐Ÿ‡ธ Syracuse 268 2000
38
CHEQcheq.ai

Protects customer journeys by distinguishing legitimate users from bad actors including humans, agents, and bots for 15,000 brands.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 261 2016
39
ATSGxtium.com

Global leader in digital transformation solutions, offering secure digital infrastructure, workplace collaboration, and customer experience services with an Ai2 automation platform for tangible business value

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 260 1994
40
Filigranfiligran.io

A cybertech company founded in 2022, specializing in eXtended Threat Management (XTM) solutions including threat intelligence, breach simulation, and cyber risk management for organizations worldwide

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 256 2022
41
Thoropassthoropass.com

Platform combining audit, assessment, and compliance automation to streamline SOC, PCI DSS, ISO 27001, HITRUST, HIPAA audits efficiently.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 234 2019
42
Cymulatecymulate.com

Provides a SaaS platform for security professionals to continuously challenge, validate, and optimize cybersecurity posture against evolving threats and attack frameworks.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 225 2016
43
DataDomedatadome.co

DataDome specializes in bot and online fraud protection using machine learning to analyze signals and provide real-time threat detection for high-profile brands globally

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 221 2015
44
Microblinkmicroblink.com

Global leader in AI-powered computer vision software focused on digital identity and commerce, providing SDKs and APIs for data extraction and automation

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 177 2013
45
Zafran Securityzafran.io

Innovative Risk Mitigation platform using security controls to protect organizations during critical exploitation windows, automating mitigations and reducing threat exposure at scale

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 175 n/a
46
Recoreco.ai

Reco AI is a SaaS security platform focused on identity protection, access control, and risk prevention, using advanced analytics and partnerships for comprehensive security

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 174 2020
47
Optima Partnersoptima-partners.com

Advising financial institutions on global compliance, regulatory requirements, cybersecurity, and ensuring adherence to laws and rules worldwide.

Financial Services ๐Ÿ‡บ๐Ÿ‡ธ New York 153 2014
48
Cycodecycode.com

Leader in Agentic Development Security, securing AI development from prompt to runtime. Unifying control, context, and autonomy in a single platform, continuously identifying risk.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 150 2019
49
Vicariusvicarius.io

Vicarius provides a comprehensive vulnerability remediation platform to help IT teams protect critical applications and assets against software exploitation

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 111 2016
50
Beyond Identitybeyondidentity.com

Secures human, machine, AI identities. Prevents unauthorized access with hardware-bound credentials, eliminating passwords, stopping credential attacks, and ensuring continuous device trust.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 90 2020
51
Intezerintezer.com

Automated platform for continuous alert triage, faster incident response, and reduction of noise and false positives in security operations.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 89 2016
52
Strikestrike.sh

Platform connecting ethical hackers with companies for efficient penetration testing, real-time vulnerability monitoring, and automated retesting and fixing.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 72 n/a
53
OutThinkoutthink.io

Cybersecurity human risk management platform enhancing security awareness training for large organizations globally, focusing on identifying, measuring, and changing behavior

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 67 2015
54
Sonrai Securitysonraisecurity.com

Enterprise cloud security platform combining workload, platform, identity, and data security with automation and advisors to mitigate risks in public cloud environments

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 63 2017
55
ReasonLabsreasonlabs.com

Revolutionizing consumer cybersecurity with advanced AI-powered protection. Against scams, fraud, identity theft. Monitoring messages, dark web scans, real-time alerts. Phishing, suspicious activity, unauthorized access.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 61 2016
56
Rhymetecrhymetec.com

Delivers premium cybersecurity and data privacy solutions for modern SaaS businesses, combining human expertise with innovative technology for growth.

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 55 2015
57
Artilus, Incartilus.net

A full-service IT firm specializing in designing and managing efficient networks, offering Cloud Solutions, IP Telephony, and focusing on client relationships

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Hauppauge 54 2007
58
Delta Computer Groupserviceexpress.com

An integrated technology company founded in 1990, offering customized IT solutions globally with expertise in cybersecurity, data management, hardware maintenance, retail solutions, and more

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Farmingdale 53 1990
59
RemoteDeskremotedesk.com

A leading remote workforce management solution using facial recognition technology to streamline, secure, and increase productivity while ensuring compliance with regulations

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 51 2018
60
Cloudawarecloudaware.com

This company offers real-time multi-cloud CMDB, vulnerability scanning, intrusion detection, patch management, cost management, compliance engine, change management, unified monitoring, usage analytics, and backups

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 51 2007
61
Chelsea Technologieschelsea-tech.com

A dynamic Managed IT Services firm specializing in providing design, hosting, and support to the global financial industry for over 25 years

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 49 1990
62
Veridiumveridiumid.com

Authentication technology provider ensuring secure access by verifying users in real-time without compromising user experience, security, or privacy in a zero-trust environment

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 47 2016
63
Argent Softwareargent.com

Provider of automation, performance management, and network monitoring products for IT departments worldwide Specializing in monitoring data center applications, databases, security, and more

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 47 1991
64
Evervaultevervault.com

A Dublin-based company simplifying data security and compliance for engineering teams with easy-to-use solutions, allowing them to focus on high-impact work

Software Development ๐Ÿ‡บ๐Ÿ‡ธ New York 43 2019
65
DoControldocontrol.io

DoControl offers a SaaS Security Platform focusing on modernizing CASB and DLP to secure SaaS applications, helping organizations mitigate insider risk and data exfiltration

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 41 2020
66
Backuptabackupta.com

Backuptaยฎ offers secure backup and fast recovery for CIAM, WIAM, and Okta configurations, with real-time alerts and synchronization between preview and production configurations

Data Security Software Products ๐Ÿ‡บ๐Ÿ‡ธ New York 33 2021
67
Turbotturbot.com

Provides cloud intelligence and automated security platforms for DevOps teams, offering guardrails, cloud intelligence, dashboards, workflow tools, and automated security solutions

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 31 2014
68
IronVestironvest.com

A biometric fraud prevention infrastructure & security app ensuring only authorized users can access & transact, focused on preventing fraud

Technology, Information and Internet ๐Ÿ‡บ๐Ÿ‡ธ New York 27 2022
69
DAG Techdagtech.com

IT services provider specializing in business intelligence, advanced products, and IT consulting to help clients stay ahead in the ever-changing tech field

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 19 1999
70
ThreatKeythreatkey.com

A leading SaaS and cloud security provider offering advanced security posture management solutions tailored to businesses of all sizes, specializing in proactive threat identification and mitigation

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 13 2020
71
Konvukonvu.com

Innovative founders working to revolutionize the security industry with humility and ambition Join us on our journey!

Technology, Information and Internet ๐Ÿ‡บ๐Ÿ‡ธ New York 12 2024
72
MEI Technology

A technology company providing innovative services in engineering, cyber security, and research to customers in aerospace, defense, optical, and biotechnology sectors globally

Appliances, Electrical, and Electronics Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Rome 10 n/a
73
Payfoneprove.com

The company offers a modern platform for continuous identity authentication, utilized by enterprises and financial institutions globally to prevent fraud

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Ny 6 2008
74
ACKURACYackuracy.com

Cutting-edge penetration testing and red team services providing actionable security insights and vulnerability eradication to protect enterprises in a complex digital landscape.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ New York 3 2024
75
Blackstone Law Group LLPblackstone-law.com

A boutique firm specializing in information security, litigation, appellate practice, global compliance, and internet governance for businesses worldwide

Law Practice ๐Ÿ‡บ๐Ÿ‡ธ New York 2 2015
76
Zero Vaults Inc.zerovaults.com

Zero Vaults ensures secure data storage and access control, allowing only authorized code or applications to use critical information, maintaining privacy and security

Computer and Network Security ๐Ÿ‡บ๐Ÿ‡ธ New York 1 n/a

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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