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Top Cyber Security Companies in Dublin (52)

Mastercard
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
We are a global technology company in the payments industry.

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re building a resilient economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help...

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Mastercard

Mastercard's Top Stability & Growth Strengths

Strong Revenue Growth: Net revenue rose 14% year over year in Q2 2026 (12% currency‑neutral) to $9.3B, with first‑half 2026 up 15% and full‑year 2025 up 16% (15% currency‑neutral). These results indicate sustained top‑line momentum across recent periods.

Diversified Revenue Streams: Value‑Added Services & Solutions grew 20% in Q2 2026 (18% currency‑neutral) and 23% in 2025, outpacing Payment Network growth. This mix shift adds a faster‑growing second engine alongside the core network.

Resilient & Sustainable Growth: Transaction fundamentals remained healthy in Q2 2026—gross dollar volume +8% to $2.9T, cross‑border +12%, and switched transactions +9% (local‑currency). Multi‑year growth from 2025 into the first half of 2026 underscores durable momentum.

CSC
Fintech • Legal Tech • Software • Financial Services • Cybersecurity • Data Privacy
41 Offices
8,500 Employees
99 Benefits Hiring Now
CSC is a global leader in providing business, legal, tax, and digital brand services to companies around the world.

CSC is a global leader in providing business, legal, tax, and digital brand services to companies around the world. With more than 8,000 employees, CSC operates in more than 140 jurisdictions, delivering solutions that help businesses thrive. We pride ourselves on our client-focused approach, market-leading expertise, and unmatched global reach.

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CSC

CSC's Top Stability & Growth Strengths

Market Expansion: CSC operates in 140+ jurisdictions and opened a larger Luxembourg office in June 2024 to build for continued growth, citing an expanding local client base and about 600 staff there. Headcount disclosures reiterate a global workforce of more than 8,000, reflecting a broader operational footprint.

Product Line Growth: The Intertrust acquisition and full migration to the CSC brand in April 2024 expanded capabilities across corporate, fund, and capital‑markets administration. The Eddystone Financial Services acquisition in June 2023 added loan agency services in Australia and New Zealand, broadening regional offerings.

Strong Market Position & Advantage: CSC highlights service to more than 90% of the Fortune 500 and the 100 Best Global Brands, indicating deep enterprise penetration. Company materials emphasize a large, integrated platform serving clients in 140+ jurisdictions.

Datadog
Artificial Intelligence • Cloud • Security • Software • Cybersecurity
16 Offices
6,500 Employees
104 Benefits Hiring Now
We are building the monitoring and security platform for developers, IT ops teams and business users in the cloud age.

Datadog (NASDAQ: DDOG) is a global SaaS business, delivering a rare combination of growth and profitability. We are on a mission to break down silos and solve complexity in the cloud age by enabling digital transformation, cloud migration, and infrastructure monitoring of our customers' entire technology stacks. Built by engineers, for engineers, Datadog is used by organizations of all sizes...

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Datadog

Datadog's Top Stability & Growth Strengths

Strong Revenue Growth: Revenue is accelerating, with early‑2026 results exceeding the prior year’s pace and the full‑year outlook raised to reflect continued momentum. Large‑customer additions further reinforce top‑line expansion at scale.

Healthy Cash Flow: Operating and free cash flow remain substantial, including strong generation in Q2 2026 and across FY2025. This liquidity provides flexibility to invest while sustaining growth.

Innovation-Driven Growth: New AI‑powered capabilities—such as Bits AI offerings, GPU Monitoring, and an agent builder—were launched around Q1–Q2 2026 and at DASH 2026, supporting usage and upsell. Broader multi‑product adoption and growth in high‑ARR cohorts are highlighted across recent updates.

Rapid7
Artificial Intelligence • Cloud • Information Technology • Sales • Security • Software • Cybersecurity
15 Offices
2,400 Employees
99 Benefits
Take Command of your Career

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...

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Rapid7

Rapid7's Top Stability & Growth Strengths

Profitability: Q2 2026 delivered positive GAAP operating income of $3.0M and non‑GAAP operating income of $28.9M, with management raising the 2026 non‑GAAP operating income outlook. This indicates margin improvement even as the top line softens.

Healthy Cash Flow: Free cash flow was $31.9M in Q2 2026 and management is targeting around $125–$135M for full‑year 2026. This ongoing cash generation underscores improved efficiency during a reset year.

Investor Backing & Capital Strength: Cash and short‑term investments increased to about $703M as of June 30, 2026, up from roughly $657M at year‑end 2025. This liquidity provides flexibility amid slower ARR and revenue trends.

RE:SURE | A Fortus Company
Cloud • Security • Cybersecurity
Dublin
27 Employees

RE:SURE is part of the Fortus Group, the UK and Ireland's largest privately held CCTV and alarm distribution company. We are leaders in CCTV Monitoring, combining best in class solutions for our installation partners with world class service for end-users. We leverage newest technologies to provide security solutions that actually STOP the crime, rather than record it (traditional CCTV) or...

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RE:SURE | A Fortus Company
Ergo Services Ltd
Information Technology • Consulting • Cybersecurity
Dublin
964 Employees
6 Benefits

Business and IT leaders trust Ergo. By embracing the relentless pace of change and the power of technology to navigate it, we steer clients away from risk and towards reward. Putting our people at the heart of problem solving, we forge long-lasting relationships with our customers and partners, offering expert advice and bespoke IT solutions that align with each client’s unique...

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Ergo Services Ltd
Integrity360
Security • Consulting • Cybersecurity
14 Offices
358 Employees
13 Benefits Hiring Now

Integrity360 is one of Europe’s leading cyber security specialists operating from office locations in the UK, Ireland, Bulgaria and Sweden. The group provides a comprehensive range of professional, support and managed cyber security services that identify and assess, protect and prevent, detect and analyse and respond and recover cyber risks and threats. Working either independently or as an extension of...

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Integrity360
Kroll
Big Data • Security • Software • Analytics • Cybersecurity
25 Offices
5,001 Employees
17 Benefits Hiring Now

Kroll is the world’s premier provider of services and digital products related to valuation, governance, risk and transparency. We work with clients across diverse sectors in the areas of valuation, expert services, investigations, cyber security, corporate finance, restructuring, legal and business solutions, data analytics and regulatory compliance. Our firm has nearly 5,000 professionals in 30 countries and territories around the...

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Kroll

Kroll's Top Stability & Growth Strengths

Strong Market Position & Advantage: Multiple third-party descriptions and industry recognitions portray Kroll as a leading independent provider in financial and risk advisory, with top placements in areas like fairness opinions and investigations/forensics. Scale signals such as a global workforce and long operating history reinforce a durable competitive position.

Market Expansion: Evidence points to active expansion through new practices (e.g., Economics and Decision Intelligence), geographic build-outs, and acquisitions across regions including APAC, Europe, and Latin America. Announcements of added services and locations indicate an expanding footprint.

Diversified Revenue Streams: A broad portfolio spanning valuation, investigations, due diligence, compliance, cyber/MDR/IR, restructuring, and agency/trustee services suggests multiple demand drivers. Recognition across several distinct service lines implies revenue is not dependent on a single offering.

Dectar
Consulting • Cybersecurity • Automation
Dublin
35 Employees

Dectar is an innovative European cyber security firm focused on proactively preventing cyberattacks and protecting the critical data at the core of every organisation. With offices in Ireland and Italy, the company develops ACSIA XDR Plus (Automated Cyber Security Intelligence Application), an Extended Detection and Response solution, that includes Threat Intelligence and Anti-Surveillance protection in our core XDR product. We...

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Dectar
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Siemens
Artificial Intelligence • Internet of Things • Security • Cybersecurity
81 Offices
293,000 Employees
41 Benefits

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...

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Siemens

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.

SAP
Artificial Intelligence • HR Tech • Information Technology • Software • Database • Cybersecurity • Big Data Analytics
52 Offices
105,328 Employees
49 Benefits
At SAP, we grow, we lead, we innovate. As colleagues, we support, challenge, and inspire one another every day.

SAP is one of the world’s leading producers of software for business process management. Today, SAP has over 250 million cloud users and more than 100 solutions covering all industries and business functions. Every day, we help companies and organizations of all sizes and industries to run their businesses profitably, to adapt continuously, and grow sustainably.

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SAP

SAP's Top Stability & Growth Strengths

Strong Market Position & Advantage: Independent trackers place SAP at or near the top of enterprise applications by revenue, and leading analyst evaluations consistently name it a Leader in cloud ERP across key segments. Breadth in adjacent areas like supply chain planning and accounts‑payable automation reinforces advantage across end‑to‑end processes.

Strong Revenue Growth: Recent full‑year results show accelerating top‑line momentum led by cloud, with Cloud ERP outpacing the broader portfolio. Guidance points to continued double‑digit cloud expansion, indicating sustained demand.

Profitability: Non‑IFRS operating profit increased markedly and free cash flow nearly doubled in 2025, reflecting improved margins as the cloud mix scales. The rising share of more predictable revenue supports earnings quality.

PFH Technology Group
Information Technology • Cybersecurity
4 Offices
594 Employees
9 Benefits Hiring Now

PFH Technology Group, a Ricoh Company, is Ireland's largest ICT services and solutions provider with 800+ employees (600+ technical). We deliver innovative, end-to-end technology solutions to businesses across public and private sectors. With a nationwide presence and a reputation for excellence, PFH specialises in IT infrastructure, cloud services, cybersecurity, managed services, and workplace transformation. As a trusted partner, PFH combines technical...

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PFH Technology Group
MetaCompliance
Information Technology • Software • Cybersecurity • Automation
5 Offices
232 Employees

With 18+ years of experience in the Cyber Security and Compliance market, MetaCompliance provides an innovative solution for staff information security awareness and incident management automation. The MetaCompliance platform was created to meet customer needs for a single, comprehensive solution to manage the people risks surrounding Cyber Security, Data Protection and Compliance. The solution provides an easier approach to managing...

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MetaCompliance
Certification Europe
Business Intelligence • Cybersecurity
Dublin
84 Employees

Established in 1999, Certification Europe is in a league of its own among accredited certification bodies worldwide. In the local and international environment, we are proud of our expertise, we are considered an authority in Information Security Management Systems (ISO 27001), as well as thought leaders in our fields of expertise. We assess companies for certification to a dynamic portfolio...

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Certification Europe
Exclusive Networks
Software • Cybersecurity
63 Offices
2,432 Employees
8 Benefits Hiring Now

Exclusive Networks is a global trusted cybersecurity specialist for digital infrastructure helping to drive the transition to a totally trusted digital future for all people and organisations. Our distinctive approach to distribution gives partners more opportunity and more customer relevance. Our specialism is their strength – equipping them to capitalise on rapidly evolving technologies and transformative business models. The Exclusive story is...

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Exclusive Networks
CyberOne Security
Software • Cybersecurity
4 Offices
73 Employees

CyberOne is a dedicated cybersecurity company that improves the security capabilities of customers cost effectively. While focused on services, CyberOne also resells best-of-breed products to provide a complete solution. We partner with our clients to align and execute their long-term security strategy.

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CyberOne Security
OUTSOURCE
Information Technology • Cybersecurity
5 Offices
46 Employees

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...

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OUTSOURCE
Nostra
Information Technology • Security • Software • Consulting • Cybersecurity
Dublin
226 Employees

Nostra was established over 17 years ago and in that time has become one of Ireland’s most trusted providers of Managed IT and Cyber Security Services for a wide range of sectors. Working with the world’s most advanced, innovative, and reliable technologies, Nostra enables businesses to grow by taking IT off the management team’s agenda, allowing them to focus on...

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Nostra
Grouper Technology
Information Technology • Software • Cybersecurity
3 Offices
9 Employees
Hiring Now

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...

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Grouper Technology
FireEye
Healthtech • Cybersecurity
20 Offices
3,090 Employees
38 Benefits

Every day at FireEye, we see firsthand the impact of cyber-attacks on real people. This is what inspires us to fulfill our mission to relentlessly protect our customers from the impact and consequences of cyber attacks. We have learned that technology alone isn’t enough to combat cyber attackers. Our fundamental belief is that hands-on front-line expertise and intelligence, combined with innovative...

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FireEye

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