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
Pqshield
Our team is shaping the way our digital world is protected against the threats of tomorrow. In a time when quantum computers will soon be able to break current cryptography methods, we're focused on empowering organizations, industries, and nations, with the ultimate quantum-resistant cryptography solutions. PQShield was selected as a World Economic Forum Tech Pioneer in 2021, a FAST COMPANY winner 2022, WIRED Trailblazer 2023 and Bloomberg’s Startups to Watch 2023. Our expertise, clarity and care enable us to deliver new global standards alongside real-world, post-quantum hardware and software upgrades - modernizing the vital security systems and components of the world's technology supply chain. Have you subscribed to our Podcast yet- Shielded, the last line of cyber defense. Find us on all platforms: Listen Now: YouTube: Spotify Podcasts: https://open.spotify.com/show/3z88i6u9zC6NSKQWXeQ7iv Apple Podcasts:
51 to 200 staff
Quantum Dice
Quantum Dice is an award-winning, fast growing quantum technology and photonics developer backed by world leading innovation from the University of Oxford. Providing random number generation (QRNGs) which generate unbiased, true random numbers. RNGs are essential components of modern communication technologies which generate cryptographically secure keys for enterprise and user needs.
11 to 50 staff
Rapid7
Here’s a new cybersecurity posture: in full command. Rapid7 can help you command your attack surface, smash silos, stay steps ahead of attackers, and take breaches from “inevitable” to preventable. The Command platform, AI-powered technology, elite 24/7 services, and Rapid7 Labs prized research give control to organizations around the world. You can reduce vulnerabilities. Automate routine tasks. See imminent threats coming. And shut them down with confidence.
1001 to 5000 staff
Reveng.Ai
At RevEng.AI, we specialise in developing foundational deep learning AI models that possess a profound understanding of binary machine code, both semantically and syntactically. Our AI is designed to rigorously validate the integrity of software supply chains at a binary level, ensuring uncompromising security and trustworthiness in digital ecosystems.
11 to 50 staff
S2s Ltd
s2s delivers and manages secure integrated systems for business. As an NG Bailey company, s2s has the ability to provide sustainable solutions ranging from cabling infrastructure and secure communications platforms through to application delivery. Our unique blend of award-winning people, business processes and best of breed technology enables us to consistently provide outstanding levels of service and expertise to our customers.
51 to 200 staff
Safepass.Me
We check active directory passwords against public database breaches offline, in a fraction of a second. Give us a try! We are at hello-linkedin@safepass.me
11 to 50 staff
Security Spoc
An Information Security and Risk Consulting, Security Spoc is on a mission to be "Your Single Point of Contact for Information Security". At Security Spoc, we recognize that small to medium-sized businesses often face the dual challenge of costly consulting services and confusing technical jargon. Our mission is to provide affordable, clear, and effective cybersecurity solutions that demystify digital security and protect your business. We specialize in making cybersecurity accessible and understandable, helping you identify actual security threats and navigate compliance requirements without the heavy costs and complexity typical of our industry. Our tailored services ensure that you know exactly where your vulnerabilities lie and how to address them effectively. Our team of experienced professionals leverages innovative risk assessment tools and a client-focused approach to deliver top-notch security solutions. With Security Spoc, you receive personalized service designed to meet your unique needs, ensuring your business is safeguarded against cyber threats while maintaining compliance with industry standards. Partner with Security Spoc for cost-effective, straightforward cybersecurity solutions that protect your assets, simplify compliance and give you peace of mind to focus on what you do best—running your business.
11 to 50 staff
Sos Intelligence
Book a demo! https://app.apollo.io/#/meet/7ij-74f-s27/30-min The Dark Web provides a marketplace for hackers, data theft and Ransomware. We provide highly cost-effective intelligence alerting services that notify you as soon as your organisation is seen anywhere across our threat feeds. Backed by bespoke collection methods and analytics, we work with individuals, business, and government organisations. Our tools provide public and private sector organisations with a way to be alerted if any keyword they are interested in gets mentioned on the Dark Web. We do this by curating threat source feeds through our bespoke feed integration modules. This means we can quickly react as new threat sources come online, or existing threat sources change. Our proprietary technology also provides comprehensive Dark Web search and data collection services, allowing for an operationally secure way to interrogate and analyse dark web content. We deliver all this through an easy to use customer portal with flexible alerting methods that are all customer configurable. Registered in England and Wales 09185530. One Ropemaker Street, London EC2Y 9AW
1 to 10 staff
South West Cyber Security Cluster
The South West Cyber Security Cluster (SWCSC) is a collaboration of organisations, actively engaged in the cyber security and IT industries. We are a member of the UK Cyber Security Forum and our collaborative includes Plymouth University, Exeter University, Devon and Cornwall Constabulary, local businesses and enterprises from across Devon and Cornwall. We embrace the wide ranging expertise and specialities of our members, to deliver the collective mission of driving greater cyber security skills and awareness across all business and industry sectors throughout the region. Our vision is to establish a ‘Centre for Cyber Excellence’ in the South West. A Centre that would be a genuine reference point for cyber best practice, not just for the region, but also nationally - attracting commercial resources and investment to the Centre and the region, ensuring real and tangible social value whilst helping to safeguard local people, local businesses and local communities.
11 to 50 staff
Spear Shield - Cybersecurity Risk And Mitigation Experts
Spear Shield - Your Trusted Cybersecurity Partner in the UK At Spear Shield, we help organisations across Suffolk, East Anglia, and the UK identify, monitor, and mitigate advanced cyber risks. We’re more than a reseller - we’re a human-centric cybersecurity partner. What do we do? We work closely with IT teams and business leaders to reduce risk, meet compliance, and defend against modern threats. Our expertise spans technical services, strategic consulting, and managed security. Core Cybersecurity Solutions + Services: → 24/7 Managed Detection & Response (MDR) → Managed Phishing Simulation Service → Behavioural AI Cloud Email Security → Web Security & CASB → Automated 3rd Party Patch Management → Vulnerability Management → Network Detection Response (NDR) → SIEM & SOAR → Back-up & Data Resilience → Penetration Testing & Security Assessments → Cyber Essentials Plus Need a security health check? We offer a Free Security Posture Assessment to help businesses understand their current risks and roadmap. Why choose us? We blend deep technical expertise with a highly consultative approach. Whether you’re defending against phishing, modern ransomware, or just starting your cybersecurity journey - Spear Shield is your trusted partner. Based in Ipswich, Suffolk | Serving clients across the UK hello@spearshield.co.uk
1 to 10 staff
Strata - Security, Simplified
In today's digital world, cyber security is more important than ever. With the proliferation of tools and cloud, data has become siloed, making it difficult for security and compliance teams to keep up. By providing complete visibility of IT and security, Strata can you identify and respond more quickly and effectively, ensuring that your data and systems are protected. In addition to improving cyber security, Strata can also help you save time and money. By consolidating security tools and reducing the need for manual data entry, Strata can free up time for more strategic tasks.
1 to 10 staff
Surecloud
Keep your business assured with SureCloud. Everything you need today and tomorrow, in our intelligent GRC platform that everyone can use. SureCloud is the most intelligent GRC platform, developed using the only event-driven architecture in the industry. Our built-in intelligence puts risk, compliance, and audit on autopilot - helping leading organisations effortlessly manage complex risks, controls, and assessments. From compliance and data privacy to risk and audit, SureCloud delivers visibility, context, and confidence across your business. Whether you’re growing fast or operating at enterprise scale, our platform adapts to your needs and grows with you.
51 to 200 staff
Sycom Solutions
At Sycom Integrated Solutions, we architect future-ready organisations through smart strategy, secure systems, and skilled leadership. With headquarters in the UK and a footprint that spans academia and enterprise, Sycom delivers transformative consultancy across cybersecurity, AI, IoT, Blockchain, and Quantum Tech. Our clients trust us for our rigour, technical depth, and unwavering commitment to strategic execution. – Our Research & Innovation Arm At the heart of our innovation sits Sycom LAB—a dynamic R&D hub dedicated to converting cutting-edge research into actionable cybersecurity and digital infrastructure solutions: • AI governance & risk modelling • Secure IoT frameworks & edge computing resilience • Blockchain interoperability & post-quantum security • Compliance automation & privacy-enhancing technologies • Enterprise-grade cybersecurity strategy and risk management • Internal audits, governance frameworks, and documentation support • Academic–industry partnerships for co-innovation and talent development • Executive advisory and workshop facilitation for public and private sectors Our Impact Sycom is trusted by businesses, universities, and government programmes to translate technical complexity into resilient digital outcomes. Whether we’re delivering secure architecture or mentoring the next generation, we lead with clarity, precision, and purpose. Let’s build a safer, smarter digital future.#SycomSolutions #SycomLAB #CybersecurityInnovation #SmartSecureSycom #FutureReady
11 to 50 staff
The Hacking Games
The Hacking Games (THG) is a recruitment tech platform using AI to enable the cybersecurity industry to hire unconventional talent to fill the labour deficit. THG uses entertainment, social media and online communities to acquire GenZ talent, and a bespoke AI platform to skills match unconventional talent to jobs.
11 to 50 staff
Tigernet Solutions Ltd
TigerNet is a small dynamic IT company specializing in providing innovative and market leading technologies to assist small to medium businesses with all aspects of the Voice and Data requirements. Providing aftersales support is a key element, one which has proven value through long client relationships. Started over 20 years ago, TigerNet has obtained key supplier partnerships and specialize in Extensive technical knowledge of Linux/Unix/Windows Servers, VoIP, Secure Backup, Internet, Cloud Solutions, Hosting, Connectivity and Security.
11 to 50 staff
Trend Micro Europe
The official LinkedIn page for Trend Micro Europe. Trend Micro, a global cybersecurity leader, helps make the world safe for exchanging digital information across enterprises, governments, and consumers. Fueled by decades of security expertise and relentless innovation, Trend leverages the full power of AI to protect over enterprises and millions of individuals across clouds, networks, endpoints, and devices. At the core of this protection is Trend Vision One™, the only AI-powered enterprise cybersecurity platform that centralizes cyber risk exposure management and security operations, delivering robust layered protection across on-premises, hybrid, and multi-cloud environments. This platform is fueled by world-class threat intelligence and insights that help defend organizations from hundreds of millions of threats every day. With employees across 70 countries, Trend empowers security leaders to stay ahead of threats, driving proactive security outcomes across the entire attack surface. This includes critical environments like AWS, Google, Microsoft, and NVIDIA. Proactive security starts here. TrendMicro.com
5001 to 10000 staff
Variti
At Variti, we are all about making the online world a safer place for its users by blocking bad bots. We are innovative, detail driven and extremely passionate about our work and mission. We specialise in proactive security technology that protects against all types of automated abuse: simple and broad bot activity, targeted and orchestrated attacks at Layer 7 as well as evolving fraud techniques that target the most critical user touchpoints.
11 to 50 staff
Virtual Graffiti Uk Limited
Virtual Graffiti is a leading IT Networking and CyberSecurity Partner that offers next-generation technology products and value-added services. Starting in the USA in Virtual Graffiti has grown internationally with offices and staff in Australia, Israel, the UK, and the Philippines
1 to 10 staff
Xitenys
Xitenys is an independent provider of next generation security and data management solutions combined with managed services serving both private and public sector clients across the UK. Xitenys has built and maintains successful customer relationships ranging from Prominent Independent Schools and major FTSE 100 multinationals that rely on our depth of knowledge delivered through our highly skilled professional services team. Working as a trusted expert, Xitenys provides a full range of solutions including on-premise, hosted as well as private and public cloud platforms. Our approach is built around best of breed and emerging disruptive technologies that provide innovative best of breed Security and Data Management solutions combined with managed and professional services to enable our clients to best protect their networks and critical data. The heart of our ethos is to build a sustainable business through longstanding and mutually beneficial relationships.
11 to 50 staff
Aretiico Group Plc
UK's First and Only Certification Authority: Empowering Sovereignty and Security in Digital Trust
11 to 50 staff
Arron Services Ltd
Formed in the late 1990s as a provider of PC Support Services to the local Businesses and the private sector, we quickly grew from a regional service provider to a leading provider of PC Support Solutions company serving the south east of the UK. Today Arron Services Ltd supplies the latest technology to private individuals and business users throughout the UK and whilst the company's customer base and profile have increased dramatically its philosophy remains the same. With headquarters in Staplehurst, Kent. Arron Services Ltd is ideally located to serve customers in the South East London and Kent.
1 to 10 staff
Barrier Networks
We are your strategic cybersecurity partner – going beyond traditional models to deliver agile, expert-led protection tailored to the needs of regulated industries and critical infrastructure. Unlike one-size-fits-all providers, we embed directly into your operations, offering high-touch, consultative support that aligns with your unique risks and challenges. With us, security isn’t just about technology – it’s about trust, insight, and long-term partnership. With deep technical knowledge and specialist Operational Technology (OT) expertise, we protect the most complex and sensitive environments – from nuclear infrastructure to industrial systems – where precision, resilience and foresight are critical. Our clients benefit from direct access to senior cybersecurity professionals, as well as access to our 24/7 rapid response Security Operations Centre and in-house Risk Operations Centre. Barrier is more than a service provider. We are a long-term security partner – every decision is informed by real-world insight and cutting-edge expertise. We stay ahead of emerging threats, helping you navigate risk with confidence. With progressive, innovative solutions and loyal, committed support, we ensure that your security strategy evolves as fast as the threats you face. With Barrier, your security isn’t just protected – it’s kept one step ahead.
11 to 50 staff
Cyber Griffin
Founded by the City of London Police in 2017, Cyber Griffin is a programme that supports businesses and individuals in the Square Mile to protect themselves from cyber crime. We are an independent, vendor agnostic service, with direct access to Police and Action Fraud databases. Our intelligence-led services are continually updated to reflect the most relevant and prevalent threats to your business. Whether you are a small medium enterprise, or a large corporation, we have a range of free services tailored to assist you. All of our services are provided free of charge and designed to be accessible to everyone, whether they have very little knowledge of cyber crime, or are individuals who hold IT security and risk management roles.
1 to 10 staff
Cyber Innovation Hub
We wrap commercial teams around ground-breaking solutions & provide niche technology-focussed cyber skills training
11 to 50 staff
