Best Connecticut Cybersecurity Firm Rankings

16 Companies - Rankings updated: June 30, 2026

Each agency listed on DesignRush is assessed for industry expertise and customer testimonials are evaluated in order to provide you with a vetted selection. Certain listings represent paid partnerships.

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  • Accenture

    World Famous IT Services for Businesses

    World Famous IT Services for Businesses

    Accenture is a renowned worldwide IT services company that excels in digital, cloud, and security solutions. With an extensive range of expertise across over 40 industries, we provide a comprehensive suite of services including Strategy and Consulting, Outsourcing, Interactive, Technology, IoT, and  [... see all Accenture reviews ]

    Top Services:

    • Cybersecurity
    • IT Services
    • Software Development
    Location
    Hartford, Connecticut
    Number of Employees
    1000 & Up
    Portfolios Count
    4 Projects Listed
    View Profile
    4.1 4.1 (2)
    4.9 4.9 (18)

  • Foresite Cybersecurity & Compliance

    Foresite Cybersecurity provides frictionless security & compliance built for businesses to scale.

    Foresite Cybersecurity provides frictionless security & compliance built for businesses to scale.

    Whether you are just getting started on your security journey or you're trying to boost your current security posture, Foresite provides an easy to manage process that streamlines your risk reduction and cybersecurity operations.  [... view Foresite Cybersecurity & Compliance profile ]

    Top Services:

    • Cybersecurity
    Location
    East Windsor, Connecticut
    Number of Employees
    100 - 249
    View Profile
    5.0 5.0 (2)

  • Charles IT

    Compliance-Driven IT. Trusted Human Partnerships.

    Compliance-Driven IT. Trusted Human Partnerships.

    Charles IT is a Connecticut-based managed IT services provider specialising in cybersecurity, compliance frameworks (SOC 2, HIPAA, CMMC, DFARS) and proactive IT support for regulated industries and growth-focused businesses.  [... view Charles IT profile ]

    Top Services:

    • Cybersecurity
    • Managed Services
    • Identity & Access Management
    Location
    Middletown, Connecticut
    Number of Employees
    Under 49
    View Profile

  • SYNERGY Consulting

    Perfect Synthesis Of Team, Process, And Technology!

    Perfect Synthesis Of Team, Process, And Technology!

    SYNERGY provides clients with experience-driven development. What does that mean? It means that at SYNERGY, we place our client experience at the center of everything we do. While launching one of our internal products, we experienced the issues associated with outsourcing, poor discipline, bad communication  [... view SYNERGY Consulting profile ]

    Top Services:

    • Cybersecurity
    • Software Development
    • Web Development
    Location
    Stamford, Connecticut
    Number of Employees
    Under 49
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
    View Profile
    5.0 5.0 (2)

  • Deloitte

    Collaborating for Lasting Impact in Business Consulting

    Collaborating for Lasting Impact in Business Consulting

    Join us at Deloitte, where we believe that our collective influence is the cornerstone of our value. With a rich legacy spanning over 175 years and a global network encompassing 150 countries, we empower remarkable achievements, solve complex problems, and drive meaningful progress for clients, professionals  [... view Deloitte profile ]

    Top Services:

    • Cybersecurity
    • IT Services
    • AI Development
    Location
    Hartford, Connecticut
    Number of Employees
    1000 & Up
    Portfolios Count
    6 Projects Listed
    View Profile
    3.4 3.4 (83)

  • Protiviti

    Global Business Consulting Excellence

    Global Business Consulting Excellence

    Protiviti is a global consulting firm that offers deep expertise, objective insights, and tailored solutions to empower leaders in tackling future challenges. With a comprehensive range of services spanning finance, technology, operations, data, analytics, governance, risk, and internal audit, we serve  [... view Protiviti profile ]

    Top Services:

    • Cybersecurity
    • IT Services
    • AI Development
    Location
    Stamford, Connecticut
    Number of Employees
    1000 & Up
    Portfolios Count
    5 Projects Listed
    View Profile
    5.0 5.0 (1)

  • SDG

    With more than 30 years of experience partnering with global brands on complex business and IT challenges, SDG is a proven leader in advisory, transformation, and managed services that enable leaders to confidently execute AI, identity, threat, and risk management solutions that protect assets and p  [... view SDG profile ]

    Top Services:

    • Cybersecurity
    • Managed Services
    • Cloud Consulting
    Location
    Norwalk, Connecticut
    Number of Employees
    250 - 499
    View Profile

  • VLink Inc

    AI-First Custom Software Development Company

    AI-First Custom Software Development Company

    VLink is a leading software development service provider specializing in top-tier digital solutions. Focusing on innovation and excellence, we deliver tailored solutions to meet clients unique needs, ensuring agility, security, and growth in the digital era.  [... view VLink Inc profile ]

    Top Services:

    • Cybersecurity
    • IoT
    • Cloud Consulting
    Location
    South Windsor, Connecticut
    Number of Employees
    500 - 999
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
    View Profile
    4.2 4.2 (18)

  • Logically

    Smarter IT for a Smarter Business.

    Smarter IT for a Smarter Business.

    Logically is an IT consulting and outsourcing firm with offices across the United States. We have locations in ME, MA, CT, OH, NY, NC, TN, MN, NV, and CA.  [... view Logically profile ]

    Top Services:

    • Cybersecurity
    • IT Services
    • Cloud Consulting
    Location
    Danbury, Connecticut
    Number of Employees
    250 - 499
    View Profile
    5.0 5.0 (13)

  • CST

    CST is Connecticut's premiere MSP (Managed Services Provider) that contracts small-to-medium-sized businesses one encompassing information systems solution.  [... view CST profile ]

    Top Services:

    • Cybersecurity
    • IT Services
    • Managed Services
    Location
    Wallingford, Connecticut
    Number of Employees
    Under 49
    View Profile
    5.0 5.0 (115)

  • Xerox Business Solutions

    Empowering Workplaces, Driving Transformation

    Empowering Workplaces, Driving Transformation

    Xerox Business Solutions delivers comprehensive workplace technology and IT services to help businesses streamline operations and drive digital transformation. With a focus on local engagement, the company offers tailored solutions including managed print services, cloud integration, and advanced document  [... view Xerox Business Solutions profile ]

    Top Services:

    • Cybersecurity
    • IT Services
    • Managed Services
    Location
    Norwalk, Connecticut
    Number of Employees
    Under 49
    View Profile

  • EY

    Building A Better Working World

    Building A Better Working World

    EY offers Accounting, Business Consulting, and IT Services with a mission to build a better working world. It provides insights and quality services that instill trust in global capital markets and economies. EY focuses on developing exceptional leaders who deliver on their commitments to all stakeholders  [... view EY profile ]

    Top Services:

    • Cybersecurity
    • IT Services
    • AI Development
    Location
    Hartford, Connecticut
    Number of Employees
    1000 & Up
    View Profile

  • Network Synergy

    Reliable IT Solutions, Seamless Integration.

    Reliable IT Solutions, Seamless Integration.

    Network Synergy has been providing networking services and support since 1988. We pride ourselves in the quality of our service, which has led to the long-term relationships we enjoy with our customers, most of whom have been with us for more than ten years.  [... view Network Synergy profile ]

    Top Services:

    • Cybersecurity
    • IT Services
    • Software Development
    Location
    Trumbull, Connecticut
    Number of Employees
    Under 49
    View Profile
    5.0 5.0 (7)

  • Maganti IT Resources

    Connecting Global Audiences Through Media App Development Proficiency

    Connecting Global Audiences Through Media App Development Proficiency

    Founded in 2004, Maganti IT Resources LLC is a certified IT powerhouse based in Naugatuck, CT, with global outreach via offshore locations. As a leader in media app development, we offer innovative solutions to businesses, helping them navigate today's ever-evolving market with technology-driven agility and  [... view Maganti IT Resources profile ]

    Top Services:

    • Cybersecurity
    • Magento
    • IT Services
    Location
    Waterbury, Connecticut
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    4.8 4.8 (40)

  • ObjectStyle

    Software as a passion.

    Software as a passion.

    Established in 2002 in the USA, ObjectStyle stands as a distinguished software technology company. We are dedicated to offering comprehensive end-to-end IT services that encompass a wide spectrum of solutions. Our expertise spans various domains, ranging from web design and mobile app development to IT  [... view ObjectStyle profile ]

    Top Services:

    • Cybersecurity
    • Outsourcing
    • Software Development
    Location
    Fairfield, Connecticut
    Number of Employees
    50 - 99
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile
    5.0 5.0 (1)

Related Services in Connecticut

Cybersecurity Companies in Connecticut

About The Author and Expert Reviewer

Content Specialist

selina@designrush.com

Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.

Former Development Director

spotlight@designrush.com

Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.

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