Directory · GB
Computer and Network Security in United Kingdom
A register of firms and the professionals working at them in the Computer and Network Security sector based in United Kingdom. Browse the public index, then filter or export on Kipplo.
Companies
1.8K on file
Onsecurity
OnSecurity offers CREST-accredited AI Augmented Penetration Testing, all whilst harnessing technology to simplify the management and delivery of pentesting. OnSecurity.io/
51 to 200 staff
Ox It Solutions Ltd
OX IT are fully trained technical and sales consultants focused on Networking, Infrastructure, and the many Security solutions available to keep your business running and secure. We have a wealth of experience designing, implementing and maintaining Networks and Security solutions for many Enterprise Level customers, as well as smaller companies across the UK. Our purpose is to supply IT products and services to local companies who need an extension to their already busy IT department. We have the skill set to help source the right products for you and support you through implementation and the life cycle of your equipment and software. PRODUCTS At OX IT Solutions we understand that technology is organic and changing every day. The complexity is significant, with an intricacy of software and hardware available, it can be a minefield to know what's right for you. Our comprehensive product portfolio, covering a wide variety of IT security and hardware, meaning we are able to provide you with the correct solution tailored to your needs. • Endpoint Security • GDPR Compliance • Hardware • Mobile Security • Network Security • Ransomware Protection • Risk & Compliance • Software • Virtualisation PROFESSIONAL SERVICES At OX IT Solutions, we work with both established and emerging technologies to give you the best possible IT services available today. Our Professional Services include: • Fast Support • Implementation • Infrastructure • Local Support Services • Maintenance Contracts • Managed Services • Penetration Testing • Pre-Sales Services • Project Management • Remote Health Check • Skills Matrix • Support Contracts • Telephone Support • Training Onsite Please visit our website for more details of our services.
11 to 50 staff
Prime Networks
At Prime Networks, we firmly believe you can push your business to its full potential with our IT solutions. We offer fast-paced, no-nonsense technology solutions to London-based businesses and give you three services in one place: IT, hosted telephony and connectivity. Our products are straightforward and everything is under one roof with one fixed monthly rate and support, from configuration to installation and beyond. Additional Services- ClickSMART – protections against malicious URLs in emails - Cryoserver - business email archiving solution - Horizon Phone System- Call recording - Mobile APP - IVR Voice Recording - High-speed internet solution Would you like to know more about our services? Get in touch: Website: Call: 020 7443 5618 Email: info@prime-networks.co.uk
11 to 50 staff
Secure Schools
Reduce cybersecurity risks with expert tools and services, built specifically for schools. Secure Schools is a cybersecurity platform for education. With attacks now a matter of when, not if, we help schools prepare by strengthening policies, delivering staff training, and running phishing simulations. We help schools across the UK prepare for any cybersecurity threats. We tailor to every type of school, whether you need to lay the foundations of your cybersecurity plans, or fundamentally reduce risks, you’ll find something that works for your school.
11 to 50 staff
Securitygen
SecurityGen is a global company focused on telecom cybersecurity. We deliver a solid security foundation for driving secure Telco digital transformations and ensuring next-gen enterprise intelligent connectivity. Our extensive product and service portfolio ensures complete protection against existing and advanced telecom security threats. In 2022, SecurityGen was the winner of- Pipeline Innovation Awards - Carrier Community Global Awards as "Best New Market Entrant” - Telecoms World Middle East "Innovation Award - Vendor"- ROCCO "the Vendor Innovators" Our Products include- ACE - IDS - NGFW - 5G Cyber-security Lab Our Services comprise- 5G Security Program - Cybersecurity Expertise - Telecom Security Program - Fraud Risk Analysis Program - Telecom Incident Investigation
11 to 50 staff
Snyk
Snyk, the leader in secure AI software development, empowers organizations to build fast and stay secure by unleashing developer productivity and reducing business risk. The company’s AI Trust Platform seamlessly integrates into developer and security workflows to accelerate secure software delivery in the AI Era. Snyk delivers trusted, actionable insights and automated remediation, enabling modern organizations to innovate without limits. Snyk is redefining secure AI-driven software delivery for over 4,500 customers worldwide today. Snyk was named a Leader in the 2023 Gartner Magic Quadrant™ for Application Security Testing (AST) and in The Forrester Wave™: Software Composition Analysis (SCA) 2023, and has been recognized on the Forbes Cloud 100 2022 along with the 2023 CNBC Disruptor 50. For more information, visit https://snyk.io.
1001 to 5000 staff
Trident Search
Your partner in cyber security talent, investment and events. From executive search to strategic investment and industry-wide collaboration, Trident fuels the growth of the world’s most pioneering cyber security companies through our three core business arms: The global search firm for early and growth-stage cyber vendors : Early-stage investment for cyber security startups : Events that bring the cyber community together With a track record of over searches completed, 50+ events delivered and six cutting-edge companies in our investment portfolio, we have become a trusted partner to 180+ organizations within the industry. Winners of “Best Cyber Recruitment Agency – UK”, Business Elite Awards 2023 and 2024, and "Cybersecurity Talent Partner 2025".
11 to 50 staff
Zuri Technologies
Zuri Technologies is a technology services company specialising in a host of NextGen IT solutions, ranging from Cyber Security to Cloud Services. Our fully integrated service enables businesses to balance growth and innovation, in a cost effective manner, allowing us to assimilate into your existing IT team. Our ethos of going that extra mile is ingrained into our company culture, as we like to think of ourselves as an extension to your business and not just another IT service provider! The ‘Zuri way’ is to challenge the norm by using technology in a positive and constructive way. Our company consists of highly qualified and experienced people, whose approach is to deliver suitable technology solutions both optimally whilst watching the bottom line!#StaySecure,#CyberSecurity,#BusinessConnectivity,#CloudInfrastructure,#InfrastructureMonitoring,#EndUserSupport,#SystemIntegrator,#VauleAddedReseller
11 to 50 staff
Appcheck Ltd
AppCheck is a Complete Enterprise Security Testing Solution that provides up to the minute vulnerability coverage for your entire estate. Whilst we provide extremely thorough infrastructure testing, our area of specialism lies within testing complex websites and applications. Not only do we detect vulnerabilities with known signatures, it’s our ability to detect some of the hardest to reach security flaws using a first principles methodology, is why we're trusted by some of the worlds most recognised brands. Users can run unlimited and continuous scans and can track and analyse discovered vulnerabilities through the vulnerability management platform. All licences come with unlimited users meaning multiple departments can run scans against a variety of environments such as development, quality assurance and production enabling our software to discover vulnerabilities 24/7. Our commercial model is very transparent which is delivered through our trusted global partner program and direct team which is based in the UK.
51 to 200 staff
Bulletproof Cyber Security
At Bulletproof we love to solve problems with simplicity & innovation. It’s our mission to make compliance & cyber security services accessible to all. We take pride in building and nurturing teams of exceptional talent, so we’re confident that our cyber security & compliance services are the best way to stay one step ahead of the hackers and protect your business. With our own in-house UK Security Operations Centre (SOC) and years of industry experience, we're ideally placed to help you stay ahead of current and emerging security threats. For our US entity, please see Target Defense Bulletproof are now part of the GRC Group
51 to 200 staff
Cryptomathic
Cryptomathic helps businesses and governments to deliver trust and confidence in the digital world. We’ve mastered the science of encryption so you can focus on the art of delivering beautiful digital experiences. Our cryptographic solutions protect sensitive personal information from unauthorised access. We help governments, banks and businesses understand their vulnerabilities, take action to keep regulators happy, and keep digital assets safe. Our solutions fall into four main areas: KEY MANAGEMENT The cornerstone of data encryption: securely create, store, exchange and refresh the cryptographic keys that protect valuable data. DIGITAL IDENTITIES & SIGNATURES Establish the legal certainty of digital documents, enable secure data controls, and maximise the opportunities of eIDAS 2.0. MOBILE APPLICATION SECURITY Protect valuable digital assets on Android and iOS devices, including apps and digital identity wallets. PAYMENTS Fulfil compliance obligations and prevent reputational damage by protecting against systematic attacks. With over 35 years experience at the cutting edge of crypographic encryption, you can rest assured knowing that your most sensitive and valuable data is secure!
51 to 200 staff
E92plus
e92plus is a leading cybersecurity VAD for UK and Ireland, going beyond traditional distribution to provide exceptional products and services that drive accelerated growth for our vendor and reseller partners. With an established track record of introducing disruptive and next-gen technologies and building successful channels, e92plus has grown to become an award winning, next generation VAD. Our services, delivered through in-house specialists, compliment and support our partners in their go-to-market strategy: encompassing technical, marketing, finance and operations, with our expertise in the entire lifecycle and agility to meet the dynamic needs of the market differentiating from legacy distribution models. Our portfolio is focused on best of breed technologies, delivering the most advanced solutions in cybersecurity that address the needs of every type of organisation from SMB to multi-national enterprise, while providing complimentary solutions to provide an integrating offering that moves beyond single products to deliver real and transformative business benefits.
51 to 200 staff
Foresite Cybersecurity
As the world becomes more connected, our lives and businesses are more vulnerable. Foresite Cybersecurity offers a new way to protect your digital world by providing simple, affordable, and scalable solutions that ensure your business’s safety. Whether your business has just started out or is looking to boost your current security model, Foresite provides an easy-to-manage process that streamlines your risk reduction and cybersecurity operations. We don’t just sell security — we provide solutions.
51 to 200 staff
Garrison Now A Part Of Everfox
Garrison is a London-based cybersecurity company founded in 2014 by David Garfield (CEO) and Henry Harrison (Chief Scientist). A global leader in hardsec, Garrison is revolutionizing ways of working for some of the most security-conscious parts of government by delivering innovative, cross-domain solutions that help drive digital transformation and user enablement. Garrison is also dedicated to protecting enterprise organizations from the threat of the web. In August 2024, Everfox acquired Garrison, strengthening its portfolio of defense-grade cybersecurity solutions. As part of Everfox, Garrison will be able to enhance the integration of its products with Everfox's existing capabilities and accelerate the development of new hardware-based security solutions. Visit for more information.
51 to 200 staff
Idenprotect
Idenprotect is a leading cybersecurity company specialising in a range of phishing-resistant and passwordless authentication and secure browsing solutions. We help organisations of all sizes eliminate password risks, streamline operations, and foster a productive, secure digital environment.
11 to 50 staff
Information Security Forum
Founded in 1989, the Information Security Forum (ISF) is an independent organisation that is driven by its Members – ranging from Fortune 500 and Forbes listed corporations, to public-sector bodies and government departments. Our business-driven solutions provide organisations with the guidance, tools and methodologies needed to tackle the wide-ranging governance, risk and compliance challenges impacting businesses around the world today.
51 to 200 staff
Insight Assurance
Insight Assurance is a security and compliance firm trusted by more than 1,500 organizations for their SOC 1, SOC 2, SOC 3, PCI DSS, ISO 27001, ISO 27017/27018, ISO 27701, ISO 42001, HITRUST, CSA STAR, NIST, and HIPAA audit needs. Insight Assurance is a licensed CPA firm, PCI Qualified Security Assessor (QSA), and ISO 27001 Certification Body founded by former Big-4 professionals (Former EY) looking to simplify the world of IT compliance. Our specialties include the following- SOC 1, SOC 2, and SOC 3 examinations - SOC for Cybersecurity examinations - SOC Readiness Assessments - ISO 27001 Certifications - ISO 27701 Services - ISO 27017 and 27018 services - HIPAA Security assessments - HITRUST assessments - CSA STAR assessments - GDPR and CCPA/CPRA assessments - Risk Assessment based on NIST CSF - Governance, risk, and compliance services - PCI-DSS assessments - Vulnerability scans - Penetration testing For more information, visit Insightassurance.com
51 to 200 staff
Intruder
Intruder was founded in 2015 to help solve the information overload crisis in vulnerability management. Having worked both as an ethical hacker for tier one companies, and for blue teams defending critical national infrastructure, Founder Chris Wallis noticed that while vulnerability management tools were great at finding issues, they were less useful when it came to prioritizing them, tracking them, and timely alerting when problems arose. Quite simply - the most important issues were often getting lost in the noise. Intruder's mission from day one has been to help divide the needles from the haystack, focusing on what matters, while ignoring the rest. Effective cyber security is about getting the basics right. Intruder helps you do that, saving time on the easy stuff, so you can focus on the rest. Since its inception in 2015, Intruder has been awarded multiple accolades, was selected for GCHQ's Cyber Accelerator, and was included on Deloitte's Tech Fast 50 2023 list as the fastest-growing cybersecurity company in the UK. It is now proud to have over happy customers all over the We're hiring! https://careers.intruder.io
51 to 200 staff
Mitiga
Mitiga preemptively detects and stops attacks before damage is done. Mitiga moves your security beyond configuration-focused prevention. In today’s cloud-first, AI-driven world, attackers inevitably get in. Mitiga promptly stops them. Our AI-native platform gives SecOps teams panoramic visibility across your entire cloud—all SaaS, identity, and AI ecosystems—preemptively decoding and preventing attacks. Instead of scrambling after an incident, you gain command: shutting down threats in real time, protecting the business, and reporting clear facts to leadership. Mitiga is used by many well-known brands to reduce risk, enhance their SecOps, and improve business resilience.
51 to 200 staff
Normcyber
Established in 2015, NormCyber is a multi-award-winning cyber security specialist, on a mission to provide organisations with complete visibility and total control over cyber risk. With a fresh approach and innovative thinking, Norm delivers clearly defined business outcomes and technically compelling solutions, that are both measurable and cost-effective. Key to its offering is a true ‘eyes-on-screen’ 24/7/365 UK-based Security Operations Centre, providing continuous protection and oversight. Norm adheres to the highest information security standards, including Cyber Essentials Plus, ISO 27001, and is both CREST-certified and PCI-DSS accredited."
11 to 50 staff
Redscan, A Kroll Business
Redscan is an award-winning provider of managed security services, specialising in Managed Detection and Response, Penetration Testing and Red Teaming. Possessing a deep knowledge of offensive security, Redscan’s experts are among the most qualified in the industry, working as an extension of clients’ in-house resources to expose and address vulnerabilities plus swiftly identify, contain and shut down breaches. By understanding how attackers operate and leveraging cutting-edge tools and threat intelligence, Redscan’s cyber security professionals can be trusted to provide the insight and support needed to successfully mitigate information security risk and achieve compliance standards. Redscan is now part of Kroll, the world’s premier provider of services and digital products related to governance, risk and transparency.
51 to 200 staff
Sectona
Sectona | Redefining Privileged Access Security Sectona is a leading Modern Infrastructure Access company, empowering enterprises worldwide with innovative Privileged Access Management (PAM) solutions through its security platform. Built with a user-first approach, Sectona delivers an integrated and easy-to-use platform that simplifies security management without compromising efficiency. Our single-console architecture ensures that organizations can secure, monitor, and manage privileges for the modern workforce across on-premise, cloud workloads, endpoints, and DevOps environments are secured monitored and managed from one unified interface. Trusted Globally Founded in 2017, Sectona has rapidly gained global recognition, with a strong partner network and offices in Mumbai, Dubai, and London. Leading research firms, partners and current customers have recognized Sectona for its role in shaping the cybersecurity landscape and securing modern digital infrastructures. At Sectona, we are driven by a passion for innovation, setting new benchmarks in privileged access security while ensuring enterprises stay agile, secure, and compliant in an evolving threat landscape. Secure your privileged access with Sectona – where security meets simplicity. For more information, visit our website
51 to 200 staff
Sitehop
The Next Generation of High-Performance, Crypto-Agile Security. Security should empower, not slow you down. As networks evolve and cyber threats grow more sophisticated, traditional encryption introduces latency, inefficiency, and future security risks. The SAFE Series by Sitehop is designed to change that. Built on hardware-accelerated encryption, our solutions deliver sub-microsecond security—protecting data in motion without compromising performance. Unlike legacy, software-based encryption, Sitehop solutions leverage FPGA-powered technology, purpose-built to handle high-speed, high-volume network traffic. This hardware-first approach eliminates encryption bottlenecks, ensuring: • Ultra-Low Latency Encryption and High Throughput • Enhance SD-WAN/NGFW Performance • Seamless Transition to PQC • Supports the move to Net Zero So if you're need a high-speed network with Post Quantum Computing resistant encryption and IPsec compliant devices that can handle 200Gbps full duplex bandwidth at the world’s lowest 835nsec latency in a single 1U rack space – look no further than Sitehop… Engineered for speed. Built for the future.
11 to 50 staff
Tdi Tetrad Digital Integrity
For over 20 years, TDI’s one and only passion has been delivering cybersecurity solutions to effectively manage the business of cyber. At the global vanguard of innovation, we created Cybersecurity Performance Management (CPM) and the industry-leading CPM platform, CnSight®. Combining CnSight® with our remarkable historical experience and our exceptional capabilities of cyber operations and compliance, we offer Managed Cybersecurity Performance, a first of its kind managed CPM offering. TDI’s CPM solutions mitigate risk, reduce ransomware, provide continuous compliance, improve cyber-ROI, and provide comprehensive instantaneous visibility into how an organization is performing against its cyber strategy, particularly for Boards of Directors. CnSight® is the industry-leading Cybersecurity Performance Management (CPM) platform which mitigates risk, reduces ransomware, provides continuous compliance, improves cyber-ROI, and provides comprehensive instantaneous visibility into how an organization is performing against its cyber strategy, so executives and Boards may effectively manage the business of cybersecurity– the result: reduced stress, better performance, less cost, and a true understanding of cyber investment. With CnSight® at its core, TDI’s Managed Cybersecurity Performance offering ensures strategic cyber goals are met to protect an organization’s investments, assets and reputation by reducing the risk of ransomware, lowering cyber insurance premiums, improving ROI, reducing legal and fiduciary liability, delivering actionable reporting to the Board and C-Suite, providing on-call advice, ensuring continuous compliance and providing subject matter expertise on the organization’s behalf in meeting with the C-Suite and the Board, dealing with auditors, and supporting budget decisions – the result: reduced stress, better performance, less cost, and a true understanding of cyber investment.
51 to 200 staff
