Connecticut's cybersecurity sector is a crucial part of protecting businesses and organizations from escalating online threats. Companies in this industry provide various services, including managed security, compliance guidance, and incident response solutions. With increasing reliance on technology, the demand for robust cybersecurity solutions continues to soar. Cyber threats, like ransomware attacks, are on the rise, prompting organizations to invest more in comprehensive protection strategies. The industry is trending towards greater automation and integration, enhancing capabilities for detecting and responding to vulnerabilities in real time. The ongoing evolution of regulations also shapes how these firms operate and innovate.

The cybersecurity firms listed here feature a mix of small to mid-sized companies operating in Connecticut, most of which were founded in the early 2000s. They typically employ between 11 and 500 professionals, facilitating personalized services for various sectors, including healthcare, finance, and technology. Companies like CyberSecOp and Datto, among others, illustrate a strong focus on comprehensive cybersecurity solutions, paving the way for enhanced client protection and regulatory compliance as the demand for cybersecurity increases.

Continue reading to discover the top cybersecurity companies in Connecticut.

Top 23 Cybersecurity Companies in Connecticut

1. CyberSecOp - Cyber Security Operations Consulting

• Website: cybersecop.com
• Ownership type: Private
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2008
• Headcount: 51-200
• LinkedIn: cybersecop

CyberSecOp - Cyber Security Operations Consulting, based in Stamford, Connecticut, is a private cybersecurity consulting firm founded in 2008. With a workforce of around 24 employees, the company specializes in a broad array of cybersecurity services, including incident response, risk management, compliance consulting, and managed security services. CyberSecOp caters to clients across various sectors, notably financial services and healthcare, helping organizations enhance their cybersecurity measures and ensure compliance with regulatory standards. The firm is recognized for its tailored approach, adapting its services to meet the unique needs of each client. CyberSecOp has also been acknowledged by Gartner, ranking among the top cybersecurity consulting firms, which underscores its credibility and expertise in the industry. The company operates with a mission to protect clients from cyber threats through proactive measures and rapid incident response, positioning itself as a trusted partner in cybersecurity.

2. Atlantic Data Security, LLC

• Website: atlanticdatasecurity.com
• Ownership type: Private
• Headquarters: East Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2011
• Headcount: 51-200
• LinkedIn: atlantic-data-security-llc

Atlantic Data Security, LLC, based in East Hartford, Connecticut, is a cybersecurity firm established in 2011. With a workforce of approximately 68 employees, the company specializes in providing a wide range of security solutions tailored to meet the unique needs of its clients. Their services include managed security, application security, cloud security, data protection, and endpoint security. The firm has developed a strong reputation for its ability to customize security strategies for various sectors, including retail, healthcare, and finance. Their team of certified cybersecurity professionals brings over 30 years of experience to the table, ensuring that clients receive expert guidance and support. Atlantic Data Security is dedicated to helping organizations safeguard their digital assets against evolving cyber threats, making them a relevant player in the cybersecurity industry.

3. Vancord

• Website: vancord.com
• Ownership type: Private
• Headquarters: Milford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2005
• Headcount: 51-200
• LinkedIn: vancord

Vancord, founded in 2005 and based in Milford, Connecticut, is a private IT services and cybersecurity firm. With a workforce of approximately 45 employees, the company specializes in managed IT services and cybersecurity solutions tailored for mid- to large-sized organizations. Vancord's service portfolio includes cybersecurity readiness assessments, incident response, vulnerability assessments, and compliance support, particularly in areas like CMMC. The firm positions itself as a Managed Security Services Provider (MSSP), offering rapid incident response and advanced monitoring to protect clients from cyber threats. Vancord has built a reputation for its proactive approach to cybersecurity, emphasizing the importance of preparedness and swift recovery from potential attacks. Their client base spans various sectors, reflecting their adaptability and expertise in addressing unique security challenges.

4. TBNG Consulting

• Website: tbngconsulting.com
• Ownership type: Private
• Headquarters: Milford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2005
• Headcount: 11-50
• LinkedIn: tbng-consulting

TBNG Consulting, also known as Vancord, is a private IT consulting and cybersecurity services firm based in Milford, Connecticut. Founded in 2005, the company has grown to employ around 22 professionals, all based in the United States. Vancord specializes in managed IT services and cybersecurity solutions, offering a range of services that include cybersecurity readiness, incident response, and compliance support. They serve mid- to large-sized businesses, primarily in the Northeast region of the United States. Vancord is recognized for its expertise in managed security services, providing rapid incident response for data breaches and cyberattacks. Their proactive approach to cybersecurity ensures that clients are prepared for potential threats and can recover effectively from incidents. Vancord has established a reputation for professionalism and technical expertise, as evidenced by positive client testimonials. They also engage in educational initiatives, such as their CyberSound podcast, which discusses current cybersecurity challenges and solutions.

5. SDG Corporation

• Website: sdgc.com
• Ownership type: Private Equity
• Headquarters: Norwalk, Connecticut, United States (USA)
• Employee distribution: India 87%, United States (USA) 12%
• Latest funding: December 2024
• Founded year: 1993
• Headcount: 201-500
• LinkedIn: sdgcorporation

SDG Corporation, founded in 1993 and based in Norwalk, Connecticut, is a cybersecurity consulting firm that focuses on risk management and identity governance. With a workforce of over 600 employees, the company provides a variety of services aimed at helping businesses strengthen their cybersecurity measures. Their offerings include managed security services, compliance consulting, and cloud security solutions, which are critical for organizations navigating the complexities of modern cybersecurity threats and regulatory requirements. SDG Corporation has built a reputation for delivering strategic advice and technology recommendations tailored to the unique needs of their clients. They serve a wide range of industries, assisting both large enterprises and mid-market firms in enhancing their security frameworks. Their commitment to continuous improvement and adaptation to emerging threats underscores their relevance in the cybersecurity field.

6. The Computer Company, Inc.

• Website: computercompany.net
• Ownership type: Private
• Headquarters: Cromwell, Connecticut, United States (USA)
• Employee distribution: United States (USA) 83%, Iran 17%
• Founded year: 1996
• Headcount: 11-50
• LinkedIn: the-computer-company-inc.

The Computer Company, Inc., founded in 1996 and based in Cromwell, Connecticut, is a private IT services provider that specializes in managed IT services, cybersecurity, and compliance solutions. With a workforce of approximately 54 employees, the company caters to a wide array of industries, including healthcare, finance, and professional services. Their mission is to enhance operational efficiency for their clients while safeguarding them against cyber threats. The Computer Company offers a comprehensive suite of cybersecurity services, such as endpoint detection and response, managed detection and response, dark web monitoring, and penetration testing. They also provide compliance solutions to help organizations meet regulatory requirements like HIPAA and NIST. Their commitment to ongoing training and staying updated with industry trends positions them as a knowledgeable partner for businesses seeking to navigate the complexities of IT security and compliance.

7. NSI (New England Systems, Inc.)

• Website: nsiserv.com
• Ownership type: Private
• Headquarters: Naugatuck, Connecticut, United States (USA)
• Founded year: 1985
• Headcount: 51-200
• LinkedIn: nsi-new-england-systems-inc--

NSI (New England Systems, Inc.), based in Naugatuck, Connecticut, has been providing IT support and cybersecurity services since its founding in 1985. The company specializes in delivering comprehensive solutions tailored for small and medium-sized businesses, as well as non-profits across Connecticut. NSI's service portfolio includes managed IT support, co-managed IT services, and thorough cybersecurity assessments. They focus on enhancing clients' technology infrastructure while safeguarding against cyber threats. With a proactive approach to service, NSI aims to anticipate customer needs and ensure satisfaction. Their cybersecurity services are designed to address the evolving landscape of threats, offering continuous monitoring and training to help clients stay secure. NSI's commitment to education and awareness in cybersecurity further underscores their role in the industry, making them a notable player in the field.

8. Datto, Inc.

• Website: datto.com
• Ownership type: Corporate
• Headquarters: Norwalk, Connecticut, United States (USA)
• Latest funding: $6.2B, April 2022
• Founded year: 2007
• Headcount: 1001-5000
• LinkedIn: datto-inc-

Datto, Inc., founded in 2007 and based in Norwalk, Connecticut, is an IT solutions provider that specializes in cybersecurity and data backup. The company offers a comprehensive suite of products aimed at managed service providers (MSPs) to ensure business continuity and disaster recovery. Key offerings include SIRIS, ALTO, and SaaS Protection, which are designed to protect critical data and applications across various business environments. Datto's solutions not only focus on backup and recovery but also incorporate advanced cybersecurity measures, such as endpoint detection and response (EDR) and next-generation antivirus protection. With a workforce of approximately 1,831 employees, Datto has established itself as a significant player in the cybersecurity sector, particularly through its partnerships with MSPs, which allow them to deliver effective IT services to their clients. In April 2022, Datto secured substantial funding, further solidifying its position in the market and enabling continued innovation in its product offerings.

9. Axiom Technology Group

• Website: thinkaxiom.com
• Ownership type: Private
• Headquarters: Stamford, Connecticut, United States (USA)
• Founded year: 2009
• Headcount: 51-200
• LinkedIn: axiom-technology-group

Axiom Technology Group, also known as Sourcepass, is an IT services and cybersecurity company based in Stamford, Connecticut. Founded in 2009, the company has grown to employ between 51 and 200 individuals. Sourcepass specializes in a wide array of technology solutions, including managed IT services and cybersecurity services. Their offerings include managed security services, security assessments, and governance, risk, and compliance services. The company serves clients across multiple sectors, such as healthcare, finance, and education, helping them enhance their IT infrastructure and ensure data security. Sourcepass operates a 24/7 Security Operations Center, which underscores their commitment to providing robust cybersecurity solutions. They also engage in professional services, including project management and technical assessments, further solidifying their position in the technology sector.

10. Charles IT

• Website: charlesit.com
• Ownership type: Private
• Headquarters: Middletown, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2006
• Headcount: 51-200
• LinkedIn: charlesit

Charles IT, founded in 2006 and based in Middletown, Connecticut, is a private IT consulting firm that specializes in managed IT services and cybersecurity solutions. With a workforce of approximately 111 employees, the company serves various industries, including healthcare, financial services, and manufacturing. Charles IT is particularly noted for its expertise in compliance assistance, helping clients navigate complex regulatory requirements such as HIPAA, FINRA, and NIST standards. Their cybersecurity offerings include services like endpoint encryption, dark web monitoring, and managed detection and response (MDR), which are crucial for safeguarding sensitive data. The firm emphasizes a personalized approach to IT support, ensuring that clients receive tailored solutions that meet their specific needs. Charles IT has established itself as a trusted partner for organizations looking to enhance their cybersecurity posture and operational efficiency.

11. The TNS Group, an Omega Systems company

• Website: thetnsgroup.com
• Ownership type: Corporate
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: January 2023
• Founded year: 1996
• Headcount: 51-200
• LinkedIn: the-tns-group

The TNS Group, an Omega Systems company, is an IT service provider based in Stamford, Connecticut, specializing in cloud solutions, cybersecurity, and compliance services. Founded in 1996, the company has built a reputation for delivering tailored IT solutions across various sectors, including banking, healthcare, and manufacturing. Their services are designed to enhance operational efficiency while ensuring robust data security. The TNS Group operates with a focus on managed services and consulting, addressing the unique needs of their clients. Their cybersecurity offerings include managed detection and response, vulnerability assessments, and cyber awareness training, which are essential for organizations looking to mitigate risks in an increasingly digital world. The company has maintained a strong commitment to compliance, evidenced by their SOC 2 certification, which underscores their dedication to protecting customer data and meeting regulatory standards.

12. CyberGuard360

• Website: cyberguard360.com
• Ownership type: Private
• Headquarters: Wilton, Connecticut, United States (USA)
• Employee distribution: United States (USA) 57%, India 33%, Australia 10%
• Founded year: 2016
• Headcount: 11-50
• LinkedIn: cyberguard360

CyberGuard360, founded in 2016 and based in Wilton, Connecticut, is a private cybersecurity firm that specializes in providing a suite of products aimed at helping Managed Service Providers (MSPs) safeguard their clients against cyber threats. With a team of approximately 22 employees, the company has developed tools that include risk assessments, dark web monitoring, and compliance training. Their product suite is designed to enhance the security posture of small to medium-sized businesses, ensuring they meet regulatory requirements and are prepared against potential cyber attacks. CyberGuard360 has garnered positive feedback from clients, highlighting the effectiveness of their platform in streamlining security processes and improving client engagement. The company operates without reported external funding, indicating a self-sustaining business model focused on delivering value to its partners and clients.

13. Coveware

• Website: coveware.com
• Ownership type: Corporate
• Headquarters: Norwalk, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: April 2024
• Founded year: 2018
• Headcount: 1-10
• LinkedIn: coveware

Coveware, founded in 2018 and based in Norwalk, Connecticut, is a cybersecurity firm that specializes in ransomware recovery and incident response services. The company assists organizations in navigating the complexities of ransomware incidents, employing expert negotiation tactics and recovery strategies to mitigate the impact of cyber extortion. Coveware's approach combines extensive case data with operational controls to enhance the effectiveness of their incident response. They handle thousands of cyber extortion cases annually, providing 24/7 support to ensure that clients can recover swiftly and securely. Their services include forensic triage, payment facilitation, and the provision of decryption tools, making them a vital resource for businesses under threat from ransomware attacks. Coveware has garnered recognition in the industry, with endorsements from reputable sources like Forrester, highlighting their expertise and the importance of their services in the current cybersecurity environment.

14. Beazley Security

• Website: beazley.security
• Ownership type: Private
• Headquarters: West Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 71%, United Kingdom (UK) 20%, France 4%, Other 4%
• Founded year: 2016
• Headcount: 51-200
• LinkedIn: lodestone-security

Beazley Security, founded in 2016 and based in West Hartford, Connecticut, is a cybersecurity consulting firm that specializes in enhancing organizational resilience against cyber threats. With a workforce of approximately 161 employees, the company provides a comprehensive suite of services, including incident response, risk management, and tailored consulting for various industries such as healthcare, education, and finance. Beazley Security operates with a unique perspective rooted in the specialty insurance industry, allowing them to offer insights that blend technical defenses with risk management strategies. Their proactive services, such as Managed eXtended Detection and Response (MXDR) and incident management, are designed to prepare organizations for potential cyber incidents and to respond effectively when they occur. The firm emphasizes the importance of readiness and resilience, making it a valuable partner for organizations looking to navigate the complexities of cybersecurity.

15. JANUS Associates, Inc.

• Website: janusassociates.com
• Ownership type: Private
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1988
• Headcount: 11-50
• LinkedIn: janus-associates

JANUS Associates, Inc., based in Stamford, Connecticut, is a cybersecurity consulting firm founded in 1988. With a team of 43 employees, the company specializes in delivering a wide range of cybersecurity, compliance, and privacy solutions. Their services include vulnerability assessments, penetration testing, enterprise risk management, and training programs, among others. They cater to various sectors such as healthcare, financial services, and government, demonstrating their capability to address sector-specific challenges. Over the years, JANUS has built a strong track record, having successfully engaged with more than 2,100 clients. Their expertise in frameworks like NIST and HIPAA further underscores their commitment to helping organizations navigate complex regulatory environments. Notably, JANUS has been trusted by numerous federal and state agencies, reflecting their credibility and experience in the cybersecurity domain.

16. EBM, Inc.

• Website: ebmusa.com
• Ownership type: Private
• Headquarters: Trumbull, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1972
• Headcount: 11-50
• LinkedIn: ebmusa

EBM, Inc., based in Trumbull, Connecticut, has been operational since 1972, providing IT services with a strong emphasis on managed IT and cybersecurity solutions. The company caters primarily to small and medium-sized businesses across various sectors, including healthcare, finance, and manufacturing. EBM offers a comprehensive suite of services designed to enhance operational efficiency and security, such as 24/7 support, cloud solutions, and professional IT consulting. Their cybersecurity services are particularly noteworthy, featuring offerings like vulnerability scanning, dark web monitoring, and multi-factor authentication. EBM's approach is characterized by a commitment to customer service and a proactive stance on IT management, ensuring that clients can focus on their core business activities while their IT needs are expertly handled.

17. Kairos Vision Consult

• Website: kairosvisionllc.com
• Ownership type: Private
• Headquarters: Stamford, Connecticut, United States (USA)
• Founded year: 2016
• Headcount: 51-200
• LinkedIn: kairos-vision-consult

Kairos Vision Consult LLC, based in Stamford, Connecticut, is a cybersecurity consulting firm established in 2016. The company specializes in managed security services, compliance solutions, and risk assessments tailored to meet the needs of various industries. With a team of skilled engineers, developers, and information security analysts, Kairos Vision Consult addresses the pressing cybersecurity challenges faced by organizations today. Their service offerings include compliance with regulations such as FIMSA, GDPR, and HIPAA, as well as security audits and penetration testing. The firm is dedicated to helping clients protect their data and reduce security risks, ensuring that they can confidently navigate the complexities of the digital world. Kairos Vision Consult also emphasizes education and training, preparing clients for the evolving job market in cybersecurity. They have not reported any funding, indicating a self-sustained growth model.

18. Protegrity

• Website: protegrity.com
• Ownership type: Corporate
• Headquarters: Stamford, Connecticut, United States (USA)
• Employee distribution: India 50%, United States (USA) 32%, United Kingdom (UK) 4%, Other 14%
• Latest funding: December 2004
• Founded year: 1996
• Headcount: 201-500
• LinkedIn: protegrity

Protegrity, founded in 1996 and based in Stamford, Connecticut, is a corporate entity specializing in data security. With a workforce of approximately 368 employees, the company provides advanced data protection solutions tailored for various sectors, including financial services, retail, and healthcare. Their product suite includes innovative technologies like vaultless tokenization and dynamic data masking, which help organizations secure sensitive information while maintaining compliance with regulatory requirements. Protegrity's platform is designed to facilitate secure data sharing and analytics, enabling businesses to leverage their data without compromising security. The company has established partnerships with major cloud service providers, enhancing its ability to protect data across different environments. Protegrity has been active in the industry for nearly three decades, demonstrating a commitment to evolving its solutions to meet the changing landscape of data security and privacy.

19. The Walker Group

• Website: thewalkergroup.com
• Ownership type: Private Equity
• Headquarters: Farmington, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: October 2006
• Founded year: 1986
• Headcount: 51-200
• LinkedIn: thewalkergroup

The Walker Group, founded in 1986 and based in Farmington, Connecticut, is a technology solutions provider that focuses on managed IT services, cybersecurity, and digital marketing. With a team of approximately 65 employees, the company serves a variety of clients, including businesses in manufacturing, education, and financial services. Their cybersecurity services are comprehensive, covering managed security for workstations and servers, compliance consulting, and security assessments. The Walker Group emphasizes high-quality professional services aimed at optimizing technology investments and ensuring compliance with industry standards. They have also made headlines for their innovative ownership model, becoming Connecticut's first Perpetual Purpose Trust-owned company, which reflects their commitment to social responsibility and long-term sustainability in their operations.

20. Polarity

• Website: polarity.io
• Ownership type: Corporate
• Headquarters: Farmington, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: July 2024
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: breach-intelligence-inc-

Polarity, founded in 2014 and based in Farmington, Connecticut, is a cybersecurity firm that specializes in providing innovative solutions for incident response, threat intelligence, and security operations. The company was established by former intelligence officers and incident responders who recognized the challenges cybersecurity teams face due to fragmented data and knowledge spread across multiple systems. Polarity's platform aims to unify this information, allowing teams to make informed decisions quickly and efficiently. Their technology integrates with over 200 tools, enabling users to access critical data without the need for extensive searching. Polarity has garnered attention in the industry, receiving accolades such as the Editors Choice Infosec Startup of the Year and the Cool Vendor Award from Gartner. The company serves a range of sectors, including finance and media, and has been recognized for its ability to enhance the productivity of security teams by reducing the time spent on data retrieval and analysis.

21. Hybrid Pathways

• Website: hybridpathways.com
• Ownership type: Private
• Headquarters: Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2018
• Headcount: 11-50
• LinkedIn: hybridpathways

Hybrid Pathways, now rebranded as New Era Technology, is a technology solutions provider based in Hartford, Connecticut. Founded in 2018, the company specializes in managed services, cloud solutions, and cybersecurity. They serve a wide range of industries, including healthcare and finance, focusing on improving operational efficiency and security through innovative technology solutions. With a dedicated cybersecurity team, New Era Technology offers a comprehensive suite of security services, including Managed Detection and Response (MDR) and IT security assessments. Their approach emphasizes collaboration with clients to tailor solutions that meet specific security needs, ensuring that businesses can navigate the complexities of digital threats effectively.

22. ASG Information Technologies

• Website: asgct.com
• Ownership type: Private
• Headquarters: Wallingford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 92%, India 8%
• Founded year: 1997
• Headcount: 11-50
• LinkedIn: asg-information-technologies

ASG Information Technologies, founded in 1997 and based in Wallingford, Connecticut, is a private IT service provider that specializes in managed IT support, cybersecurity, and consulting services. With a team of 26 employees, ASG caters primarily to small and mid-sized businesses across various sectors, including healthcare, finance, and manufacturing. The company emphasizes enhancing operational efficiency and security through tailored IT solutions. Their service offerings include managed data backup, disaster recovery, IT security solutions, and regulatory compliance, which are critical in today’s digital environment. ASG has built a reputation for delivering reliable IT support and cybersecurity services, helping clients navigate the complexities of modern technology while safeguarding their critical business data.

23. TAB Computer Systems, Inc.

• Website: tabinc.com
• Ownership type: Private
• Headquarters: East Hartford, Connecticut, United States (USA)
• Employee distribution: United States (USA) 95%, Turkey 5%
• Founded year: 1983
• Headcount: 11-50
• LinkedIn: tab-computer-systems-inc.

TAB Computer Systems, Inc., based in East Hartford, Connecticut, has been a player in the IT service sector since its founding in 1983. Initially a software company, TAB has evolved into a full-service IT technology firm, catering primarily to small and medium-sized businesses. Their offerings include cloud solutions, compliance solutions, disaster recovery, and notably, cybersecurity assessments. The company prides itself on a client-focused approach, ensuring that businesses receive the necessary support to maintain operational efficiency and security. With a team of around 38 employees, TAB emphasizes a commitment to professional development and best practices in IT support. In 2021, they transitioned to a 100% employee-owned model, which may enhance their dedication to client service and operational excellence. Their services are designed to be accessible, with free consultations and risk assessments available to potential clients, reflecting their proactive stance in addressing cybersecurity concerns.

Cybersecurity Insights: Key Companies in Connecticut

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