Top Cyber Security Companies in Belfast (28)
Nisos is a human risk intelligence and managed investigations company that protects organizations and their people from human-driven and digital threats by operating as an extension of their security, intelligence, and legal teams. It leverages a team of expert analysts, specialized in open-source intelligence and adversary tradecraft, to provide actionable intelligence that addresses complex risks like executive threats, insider fraud,...
Nisos's Top Stability & Growth Strengths
Investor Backing & Capital Strength: Investor participation in a 2025 Series C round indicates ongoing access to growth capital, reinforcing confidence in the company’s trajectory. Funding activity appears alongside continued platform development and market engagement.
Product Line Growth: The launch of the Ascend platform in 2025 and subsequent modules for insider threat intelligence and identity integrity point to a widening platform-plus-services portfolio. This progression suggests movement beyond services-led investigations into more scalable offerings.
Strong Revenue Growth: Company communications from 2023 describe significant increases in monthly and subscription revenue along with very strong net revenue retention. These historical signals indicate commercial momentum, even as more recent financial results are not independently verified.
At Rapid7, our vision is to create a secure digital world for our customers, our industry, and our communities. We do this by harnessing our collective expertise and passion to challenge what’s possible and drive extraordinary impact. We’re building a dynamic and collaborative workplace where new ideas are welcome. Protecting 11,000+ customers against bad actors and threats means we’re continuing...
Rapid7's Top Stability & Growth Strengths
Profitability: Operating and net income remained positive even as revenue softened in recent quarters. This indicates an earnings base that is holding up during a period of slower demand.
Healthy Cash Flow: Free cash flow stayed positive with meaningful generation quarter to quarter, and guidance points to continued cash production. Liquidity is reinforced by a sizable balance of cash, cash equivalents, and government securities.
Future-Ready Strategy: Management is concentrating investment on the Command Platform, detection and response, exposure management, and AI-enabled security operations. This refocus aims to position the portfolio for a return to growth once the transition progresses.
Turn your obsession for tech into an unbelievable career opportunity with a US Fortune 500* company – right here in Belfast. Aflac Northern Ireland is a Technology and Cybersecurity Innovation Centre, based in Belfast, Northern Ireland. *No. 131 actually, which we’re a wee bit proud of… Even though Aflac is the largest supplier of supplemental health insurance in the US and...
Verizon is one of the world’s leading providers of technology and communications services, transforming the way we connect across the globe. We're a diverse network of people driven by our shared ambition to move the world forward - collectively building the network America relies on most. Here, we have the ability to learn and grow at the speed of technology,...
Verizon's Top Stability & Growth Strengths
Strong Market Position & Advantage: Verizon is positioned as a U.S. wireless leader by scale and enterprise reach, with repeated references to leadership by subscribers and differentiated enterprise/private 5G capabilities. Network reliability is also framed as a key advantage that supports premium positioning amid competition.
Market Expansion: The fiber footprint expands materially through the Frontier Communications acquisition, increasing broadband reach and strengthening the mobility-and-home convergence strategy. Fixed wireless access and broadband subscriber additions are described as ongoing growth vectors supporting a broader footprint.
Healthy Cash Flow: Cash generation is emphasized through guidance and commentary pointing to strong free cash flow that can fund spectrum, fiber, and 5G investments. Improved guidance and continued investment capacity are presented as resilience enablers even as competitive pressure rises.
ITC Secure is an advisory-led cyber security services company. We have a 25+ year track record of delivering business-critical services to over 300 blue-chip organisations - bringing together the best minds in security, a relentless focus on customer service and advanced technological expertise to help businesses succeed. With our integrated delivery model, proprietary platform and customer-first mindset, we work as...
Alert Logic is the industry’s first SaaS-enabled managed detection and response (MDR) provider, delivering unrivaled security value. Since no level of investment prevents or blocks 100% of attacks, you need to continuously identify and address breaches or gaps before they cause real damage. With limited budget and expertise, this level of security can seem out of reach. Our purpose-built technology...
An award winning, locally owned, IT Managed Security Services Provider (MSSP) working with SME/Enterprise customers across the UK, Ireland and internationally. Outsource solutions and services, covering from 'the desktop to the data centre' are all underpinned by our "Security First" approach and focus on improving the security, performance and productivity of every company we partner with. We also offer a suite...
Tek Experts is now a part of TeKnowledge. TeKnowledge—bringing together the expertise of Tek Experts, Elev8 Tek and Cytek Security—is at the forefront of digital transformation. We provide governments and enterprises around the globe with unparalleled enterprise technical managed services, advanced technical skilling, and cybersecurity services. Tek Experts remains a leading global provider of technical talent solutions and a trusted...
Siemens is a technology company focused on industry, infrastructure, mobility, and healthcare. Creating technologies for more resource-efficient factories and resilient supply chains to smarter buildings and grids, to cleaner, comfortable transportation and advanced healthcare, the company empowers customers to transform the industries that form the backbone of economies, transforming the everyday for billions of people. In fiscal 2020, which ended on...
Siemens's Top Stability & Growth Strengths
Strong Market Position & Advantage: Siemens holds leading positions across industrial automation and software, smart infrastructure, mobility, and healthcare technology (via Siemens Healthineers), with multiple segments ranked first or second and significant contract wins expanding backlog. This breadth provides competitive advantage across diverse high-growth end markets.
Healthy Cash Flow: The company reports strong free cash flow at the Group level in FY2024 and subsequent quarters, supporting investment, M&A, and a new multi‑year share buyback program. Robust cash conversion across industrial businesses underpins financial flexibility.
Resilient & Sustainable Growth: Comparable revenue increased in FY2024 and continued to rise in FY2025 quarters, while orders and book‑to‑bill above 1, a record order backlog, and confirmed FY2025 guidance provide visibility. Growth is supported by electrification, data‑center demand, rail investments, and ongoing portfolio actions.
Hikvision is a world leading manufacturer and supplier of security products and solutions. Featuring an extensive and highly skilled R&D workforce, Hikvision manufactures a full suite of comprehensive products and solutions for a broad range of vertical markets. In addition to the security industry, Hikvision extends its reach to smart home tech, industrial automation, and automotive electronics industries to achieve...
Grouper Technology (Grouper®) is partner to some of Europe’s leading organisations in their software modernisation and digital transformation journey. We help organisations create innovative management systems, tools and technologies that empower their quality assurance needs and in particularly, relating to corporate governance, risk, and compliance. Grouper offers two primary pillars of "Specialised Application Solutions” and “IT Advisory Services”. Our advisory...
Unlock the full potential of your business with digital solutions built for you and with you. Our industry experts get to know your business inside-out, exploring your processes, pain points and people, to build tailored technology across Cloud & IT Services, Cyber Security, CRM and ERP. With solutions designed around your operations, you get the freedom to be more productive...
We are a close-knit community of big thinkers collaborating to keep the world safe. Our passion, creativity and expertise bring next-level technology solutions to life in autonomous systems, cyber, C4ISR, strike, space, and logistics and modernization for our customers around the globe. On the Northrop Grumman team, you’ll join our pursuit of excellence immersed in a dynamic culture of innovation...
Northrop Grumman's Top Stability & Growth Strengths
Resilient & Sustainable Growth: Sales have been rising with management raising 2026 guidance, and a book-to-bill above 1 supports continued expansion from a record backlog. Quarterly gains across multiple periods point to steady, durable top-line momentum rather than one-off spikes.
Strong Market Position & Advantage: Prime roles on the B-21 Raider and LGM-35A Sentinel, along with top-tier industry rankings, demonstrate durable competitive standing in high-priority defense domains. A large, multi-year backlog underpins this position with clear demand visibility.
Diversified Revenue Streams: Multiple operating segments (Aeronautics, Mission Systems, Defense Systems, Space Systems) are contributing to sales and new awards, with several major programs ramping. Backlog and awards are distributed across sectors and programs, reducing reliance on any single line of business.
At PwC our purpose is to build trust in society and solve important problems. We’re a network of firms in 155 countries with over 327,000 people who are committed to delivering quality in assurance, advisory and tax services. Find out more and tell us what matters to you by visiting us at www.pwc.com.
Vertical Structure is an independent cyber security consultancy with a "human-first" approach. We specialize in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications.
We provide the most effective cybersecurity and compliance solutions to protect people on every channel including email, the web, the cloud, and social media.
Proofpoint's Top Stability & Growth Strengths
Strong Revenue Growth: Disclosures cite surpassing $2 billion in ARR in 2024 and reaching $2.45 billion by the end of 2025 with continued double-digit momentum. New customer additions and strong adoption of data security and collaboration offerings are described as contributing factors.
Strong Market Position & Advantage: Multiple analyst evaluations in 2024–2025 consistently name the company a Leader in core categories, and Gartner-referenced data cites No. 1 market share in Secure Email Gateway and Cloud Enterprise DLP. A large enterprise footprint, including a significant portion of the Fortune 100, further underscores competitive strength.
Market Expansion: Acquisitions such as Hornetsecurity and Acuvity are described as expanding reach into MSP/SMB channels, Europe, and AI security. New product introductions and a revamped partner program are credited with accelerating adoption across email, collaboration, and data protection.
ANGOKA is an IoT security company focused on protecting M2M communications for Smart Cities and Mobility. Headquartered in Belfast, with offices in London and The Hague, ANGOKA offers solutions that protect devices’ identities. With an increase of inherently insecure networks coming online with the boom of IoT, ANGOKA’s solutions safeguard critical machine-to-machine communication integrity and data provenance, creating trusted connections,...
Gen (NASDAQ: GEN) is a global company dedicated to powering Digital Freedom through its trusted Cyber Safety brands, Norton, Avast, LifeLock, Avira, AVG, ReputationDefender and CCleaner. There’s a new generation, and it’s not Gen X, Y, or Z. It’s Gen D: Generation Digital. Our family of consumer brands is rooted in providing safety for the first digital generations. Now, Gen empowers...
Gen's Top Stability & Growth Strengths
Strong Revenue Growth: Management reported higher revenue and bookings in Q2 FY2026 and raised full‑year revenue guidance, indicating accelerating top‑line momentum. Q3 guidance also points to continued year‑over‑year growth in the near term.
Healthy Cash Flow: Operating and free cash flow increased year to date alongside non‑GAAP earnings improvements. This cash generation supports reinvestment and provides cushion during integration.
Diversified Revenue Streams: Growth is coming from both the core Cyber Safety business and the expanding Trust‑Based Solutions offerings, including the MoneyLion contribution. The mix shows multiple engines driving bookings and revenue rather than a single product line.
Anomali is the leader in intelligence-driven extended detection and response (XDR) cybersecurity solutions. Anchored by big data management and refined by artificial intelligence, the Anomali XDR platform delivers proprietary capabilities that correlate the largest repository of global intelligence with telemetry from customer-deployed security solutions, empowering security operations teams to detect threats with precision, optimize response, achieve resiliency, and stop attackers...
