Information security protects businesses from cyber threats through various tools and services. Companies in Connecticut are at the forefront of this industry, providing solutions that range from risk assessments to managed security services. This region retains a mix of old and new firms, reflecting a commitment to continuous evolution and adaptation to new threats. Innovative strategies, such as automated vulnerability assessments and cloud security insights, are becoming vital components for success. As cyber threats evolve, so does the demand for robust information security services, pointing to a booming future for the industry.

The companies highlighted in this list showcase Connecticut's robust information security sector. Ranging from small teams of 11 to larger firms with over 500 employees, these organizations were founded between 1985 and 2018, illustrating a rich history in cybersecurity. Their expertise spans various specializations including cybersecurity consulting, managed services, and innovative data protection solutions. Hailing from cities like Stamford, Norwalk, and Milford, these companies reflect a concentrated effort to combat evolving digital threats.

Continue reading to discover the top information security companies in Connecticut.

Top 21 Information Security Companies in Connecticut

1. 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 founded in 2011. The company specializes in providing a broad spectrum of security solutions designed to protect businesses from cyber threats. With a workforce of approximately 68 employees, Atlantic Data Security prides itself on its team of certified cybersecurity professionals who possess expertise in over 80 technologies. Their service offerings include managed security services, application security, cloud security, data protection, and endpoint security, among others. The firm has built a reputation for customizing its services to meet the unique needs of clients in various industries, including retail, healthcare, and finance. Their proactive approach to cybersecurity, which includes threat intelligence and incident response capabilities, has been instrumental in helping organizations safeguard their digital assets. Client feedback highlights the effectiveness of their strategies in mitigating risks and ensuring compliance with industry regulations.

2. 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 cybersecurity consulting firm founded in 2008. With a workforce of 51-200 employees, the company specializes in a broad spectrum of cybersecurity services, including incident response, risk management, compliance consulting, and managed security services. CyberSecOp caters to a variety of 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 for its expertise, being ranked among the top cybersecurity consulting firms by Gartner Peer Insights. This recognition underscores their relevance and effectiveness in the cybersecurity consulting space, as they continue to support organizations in navigating the complexities of cyber threats and compliance requirements.

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, based in Milford, Connecticut, is a private IT services and cybersecurity firm founded in 2005. With a workforce of approximately 45 employees, the company specializes in managed IT services, cybersecurity readiness, and incident response. Vancord serves mid- to large-sized businesses, providing customized solutions to safeguard against digital threats and maintain compliance with industry regulations. Their service offerings include vulnerability assessments, penetration testing, dark web monitoring, and incident response services. Vancord has built a reputation for delivering effective cybersecurity strategies and has been recognized as a top-rated managed security services provider in New England. Their focus on continuous monitoring and threat intelligence reflects their commitment to staying ahead of evolving cyber threats.

4. 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 specializes in risk management and identity governance. With a workforce of approximately 612 employees, the company operates primarily in the United States and India. SDG offers a wide range of services, including managed security, compliance consulting, and cloud security solutions. Their approach is centered on helping businesses navigate complex regulatory environments while enhancing their cybersecurity posture. SDG's offerings include advanced services such as Zero Trust Advisory, Security Assessments, and Managed Detection and Response (MDR). The firm has built a reputation for providing actionable strategic advice and expert systems integration, catering to both large enterprises and mid-market firms. Their commitment to continuous improvement and adaptation to the changing threat landscape underscores their role as a trusted partner in the cybersecurity domain.

5. 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 between 11 and 50 professionals, all based in the United States. Vancord specializes in providing managed IT services, cybersecurity readiness, and incident response solutions tailored for mid- to large-sized businesses. Their service offerings include vulnerability assessments, penetration testing, dark web monitoring, and compliance support, particularly in relation to CMMC standards. Vancord is recognized for its rapid incident response capabilities, helping organizations mitigate the impact of cyber threats. The firm primarily serves clients in the Northeast region of the United States, establishing a strong presence in the local market.

6. 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 a private IT services and cybersecurity firm 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, cybersecurity services, and professional services. Their cybersecurity offerings are particularly noteworthy, featuring managed security services, security assessments, and governance, risk, and compliance services. Sourcepass serves clients across various sectors, helping them enhance their IT infrastructure and secure their data. The company has developed a reputation for its proactive approach to cybersecurity, utilizing a 24/7 Security Operations Center to monitor and respond to threats. This commitment to security and operational efficiency has made Sourcepass a trusted partner for businesses looking to improve their technology landscape.

7. 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 specializing in managed IT services, cybersecurity, and compliance solutions. With a workforce of approximately 54 employees, the company serves a wide array of industries, including healthcare, finance, and professional services. Their offerings are designed to enhance operational efficiency and protect clients from cyber threats. The Computer Company has developed a reputation for its expertise in cybersecurity, providing services such as endpoint detection and response, multi-factor authentication, and awareness training. They also assist organizations in achieving compliance with various regulations, including HIPAA and CMMC. Their proactive approach to IT management and security has made them a trusted partner for businesses seeking to safeguard their digital assets and ensure regulatory adherence.

8. 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 1985. The company specializes in offering comprehensive solutions tailored for small and medium-sized businesses, as well as non-profits. Their service offerings include managed IT support, co-managed IT, and detailed cybersecurity assessments. NSI emphasizes a proactive service model, focusing on customer satisfaction and the continuous education of clients regarding cyber threats. They have developed a range of services aimed at enhancing technology infrastructure and protecting against cyber risks, which is particularly crucial for their target clientele. NSI's commitment to cybersecurity is evident in their approach to constant monitoring and the implementation of advanced security measures, making them a relevant player in the information security industry.

9. 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 with a workforce of approximately 111 employees. The company specializes in managed IT services, cybersecurity solutions, and compliance assistance, catering primarily to industries such as healthcare, financial services, manufacturing, and non-profits. Their services include proactive IT support, security assessments, and compliance with standards like HIPAA and FINRA. Charles IT emphasizes a personalized approach, ensuring that their clients receive tailored solutions to meet their specific IT challenges. Their commitment to cybersecurity is evident in their offerings, which include endpoint encryption, dark web monitoring, and managed detection and response (MDR) solutions. This focus on security and compliance positions them as a valuable partner for organizations navigating the complexities of IT security.

10. 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 range of products aimed at managed service providers (MSPs) to ensure business continuity and disaster recovery. Their solutions include SIRIS, a high-performance business continuity tool, and SaaS Protection, which secures critical data in cloud applications like Microsoft 365 and Google Workspace. Datto's focus on protecting clients from downtime and data loss is evident in their comprehensive suite of services, which also features endpoint backup, managed security operations, and next-generation antivirus solutions. With a workforce of over 1,800 employees and significant funding of $6.2 billion as of April 2022, Datto continues to play a vital role in the information security industry, helping businesses navigate the complexities of data protection and cyber threats.

11. 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 Managed Service Providers (MSPs). With a team of approximately 22 employees, the company has developed tools that assist MSPs in protecting their clients from various cyber threats. Their product offerings include CP360 for cyber prospecting, PG360 for training and compliance, OB360 for technical risk assessments, and RA360 for functional risk assessments. These tools are designed to help businesses improve their security measures and ensure compliance with regulatory standards. CyberGuard360 has garnered positive feedback from its partners, highlighting the effectiveness of its platform in enhancing client engagement and security awareness. The company operates primarily in the United States, with additional presence in India and Australia, reflecting a growing international footprint in the cybersecurity industry.

12. 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 that enhance operational efficiency and data security across various sectors, including banking, healthcare, and manufacturing. With a workforce of around 39 employees, The TNS Group operates primarily in the United States, focusing on managed services and consulting to meet the unique needs of its clients. Their cybersecurity offerings include managed detection and response, vulnerability assessments, and cyber awareness training, reflecting their commitment to addressing the evolving threats in the digital landscape. The company has successfully completed SOC 2 audits for over a decade, underscoring their dedication to maintaining high standards of data protection and compliance.

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 team is dedicated to ensuring minimal downtime and financial repercussions for their clients. They handle thousands of cyber extortion cases annually, providing 24/7 support and leveraging a wealth of aggregated ransomware case data to inform their strategies. Their services include forensic triage, payment facilitation, and compliance checks, making them a trusted partner for businesses facing ransomware threats. Coveware has also been recognized by industry experts, including endorsements from Forrester, highlighting their effectiveness in negotiating with threat actors and facilitating secure recovery processes.

14. 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 that has been protecting clients' data and interests since its founding in 1988. With a team of experienced professionals, each bringing at least eight years of expertise, JANUS focuses on providing comprehensive cybersecurity, compliance, and privacy solutions. They serve a wide array of sectors, including healthcare, financial services, and government, helping clients navigate complex regulatory environments. The firm has successfully completed over 2,100 client engagements, showcasing their capability and reliability in the field. Their services range from vulnerability assessments and penetration testing to enterprise risk management and training. Notably, JANUS is involved in specialized compliance areas such as the Cybersecurity Maturity Model Certification (CMMC) and MARS-E compliance for healthcare exchanges, reflecting their adaptability to evolving industry standards. Their commitment to client security and regulatory adherence positions them as a significant player in the information security industry.

15. 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 businesses and organizations. Their offerings include critical services such as FIMSA, GDPR, and HIPAA compliance, alongside penetration testing and security incident response. With a team of skilled engineers and information security analysts, Kairos Vision Consult addresses the complexities of cybersecurity threats and regulatory requirements. They aim to empower organizations to protect their data and reduce security risks effectively. The firm also emphasizes education and training, preparing clients for the evolving job market in cybersecurity. While they have not reported any funding, their active engagement in the cybersecurity sector highlights their commitment to helping organizations secure their digital environments.

16. 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 data security company that specializes in providing advanced data protection solutions tailored for businesses across various sectors, including financial services, retail, and healthcare. With a workforce of approximately 368 employees, Protegrity focuses on innovative methods such as vaultless tokenization and dynamic data masking to help organizations safeguard sensitive information. Their solutions are designed to ensure compliance with regulatory requirements, which is increasingly important in today's data-centric world. Protegrity's platform allows for secure data sharing and management across cloud environments, enhancing the ability of businesses to utilize data while maintaining privacy and security. The company has established partnerships with major cloud providers like AWS and Snowflake, further solidifying its position in the industry. Protegrity's commitment to protecting personal identifiable information (PII) and other sensitive data types is evident in their offerings, which aim to reduce risks associated with data breaches and enhance overall data governance.

17. 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 cyber security consulting firm dedicated to enhancing the resilience of organizations against cyber threats. With a workforce of approximately 161 employees, the company specializes in a range of services including incident response, risk management, and tailored consulting for various sectors such as healthcare, education, and finance. Beazley Security operates with a unique perspective rooted in the specialty insurance industry, allowing them to provide clients with insights that go beyond traditional security measures. Their offerings include proactive preparation, implementation of security measures, and comprehensive incident response strategies. The firm is committed to helping clients understand their risk posture and improve their cyber resilience, making them a significant player in the information security sector.

18. 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 services and cybersecurity. With a team of around 24 employees, EBM focuses on supporting small and medium-sized businesses across various sectors, including healthcare, finance, and manufacturing. Their service portfolio includes 24/7 IT support, cloud solutions, and professional IT consulting, ensuring that clients can maintain operational efficiency while safeguarding their data. EBM's cybersecurity services are comprehensive, featuring vulnerability scanning, dark web monitoring, and employee training to combat cyber threats. The company prides itself on its high client retention rate, reflecting its commitment to customer satisfaction and effective IT management. EBM's proactive approach to IT infrastructure management and disaster recovery further highlights its dedication to maintaining security and continuity for its clients.

19. 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, which has recently 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 variety of industries, including healthcare and finance, focusing on improving operational efficiency and security through innovative technology solutions. Their cybersecurity services are particularly noteworthy, featuring a comprehensive SecureBlu portfolio that includes managed detection and response, data security, and governance risk compliance. With a team of skilled professionals, Hybrid Pathways aims to help businesses navigate the complexities of digital security, ensuring that their clients' digital and physical assets are well-protected.

20. 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 approximately 26 employees, ASG caters primarily to small and mid-sized businesses across various sectors, including healthcare, finance, and non-profit organizations. The company emphasizes enhancing operational efficiency and security through customized IT solutions. ASG's service portfolio includes managed data backup, disaster recovery, IT security solutions, and regulatory compliance, showcasing their commitment to addressing the evolving cybersecurity needs of their clients. Their proactive approach to IT management and security has positioned them as a reliable partner for businesses looking to protect their digital assets and ensure compliance with industry standards.

21. Technical Consulting & Research, Inc.

• Website: tcrinc.com
• Ownership type: Private
• Headquarters: Weston, Connecticut, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1986
• Headcount: 1-10
• LinkedIn: technical-consulting-%26-research-inc-

Technical Consulting & Research, Inc. (TCR), founded in 1986 and based in Weston, Connecticut, is a private consulting firm that specializes in cybersecurity and IT services. With a small team of around 36 employees, TCR focuses on providing a range of services including training, policy development, and compliance assistance, particularly for organizations involved in government contracting and healthcare. The company has developed specific offerings like CyberSleuth Spider, which aids organizations in meeting cybersecurity standards such as NIST SP 800-171 and CMMC. TCR also operates the Center for Advanced Research on Emerging Technologies (CARET), which explores challenges in safeguarding sensitive information. Their commitment to enhancing cybersecurity awareness and compliance through training programs positions them as a relevant player in the information security industry.

Information Security Insights: Key Companies in Connecticut

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