Cyrex
Cyrex Swarm Load Testing
Headless Load Testing at Scale

Cyrex Swarm™Simulate millions of concurrent users.

The industry-standard, fully headless load testing platform built to simulate real player behavior across gaming, blockchain, and high-concurrency enterprise systems.

No-commitment consultation

Proposal in 5 days

Trusted by 150+ studios

Trusted by Industry Leaders

Netflix
Techland
Epic Games
Take-Two Interactive
Sumo Digital
Bethesda
Amazon Games
Plarium
Warner Bros

What is Cyrex Swarm?

Headless concurrency testing for multiplayer backends. We don't just "ping" your servers. We replicate the entire ecosystem of your game or platform.

Headless Architecture

No rendered game clients. No hardware bottlenecks. Just pure network-level concurrency simulation for accurate infrastructure testing.

Real Player Journeys

Bots execute complete user flows including authentication, matchmaking, gameplay loops, store purchases, and Web3 transactions.

Scales to Millions of CCU

Cloud-deployable and horizontally scalable architecture. Test anything from 10K users for feature validation to millions for peak event modeling.

Protocol-Level Integration

Direct integration with Unreal Engine, Unity, Photon, custom backends, TCP/UDP protocols, and proprietary networking stacks.

Swarm doesn't simulate "traffic." It simulates players and users.

The Backbone of Every Load Test

Swarm powers all Cyrex load testing engagements - from stress testing to spike testing

Swarm is the proprietary technology behind every Cyrex load testing engagement - from baseline validation to peak event modeling.

Why Traditional Load Testing Fails for Games

Generic tools can't replicate multiplayer game traffic at scale

UI Automation Tools Are Too Heavy

Tools like Selenium, Playwright, or Unity Test Framework spin up full game clients. This introduces rendering overhead, memory bloat, and artificial concurrency caps. You're not testing your backend — you're testing how many clients your test rig can render.

HTTP Load Tools Don't Understand Game Networking

Generic HTTP flood tools (JMeter, Locust, K6) don't integrate with UDP-based game protocols, stateful sessions, or real-time multiplayer traffic. They can't replicate matchmaking, lobby systems, or client-authoritative flows.

Generic Traffic Doesn't Expose Real Bottlenecks

Empty traffic doesn't replicate how real users behave. Authentication, matchmaking, gameplay state synchronization, inventory updates — these are the actions that break backends under load. You need to simulate actual player journeys.

Launch Without Guesswork

Studios that skip load testing gamble with infrastructure stability.

Cyrex Swarm Cityscape

Untested backends fail at scale

Studios that skip load testing gamble with infrastructure stability. Pre-launch bottlenecks go undetected. Post-launch, those bottlenecks become outages.

Authentication queues break, matchmaking times out, and game states desync. When pre-launch bottlenecks remain hidden, they inevitably manifest as production failures that crash your service and frustrate players.

Downtime is permanent reputation damage

Launch windows are final; you cannot re-launch. In the modern live-service era, negative community sentiment spreads significantly faster than your engineering team can deploy fixes.

Swarm validates infrastructure before players arrive

Swarm validates your infrastructure before the first player arrives. We turn performance testing from a high-stakes gamble into a structured, predictable, and controllable part of your release cycle.

Your backend will fail at scale. Test it before your players and users do.

Portfolio

What Clients Say

Cyrex provided us with a bespoke service that we could not find anywhere else but desperately needed. Working with their engineers was a pleasure from the opening conversations through stress testing and penetration testing, and delivered results that gave our team confidence that we were ready to go live.

System Era Softworks

The experience was excellent from start to finish. The engagement ran smoothly, and the Cyrex team showed great flexibility in accommodating last-minute changes without missing a beat. They were professional throughout and delivered solid work at a fair price. We'd gladly work with them again and recommend them to anyone looking for a reliable engineering partner.

Moon Studios

After some frustrating experiences with vendors in the past, working with Cyrex was a refreshing change. They hit the ground running and had things up and running quickly. What stood out was how little they needed from us — minimal resources and few questions, which freed up our team to stay focused on building the game. Cyrex went above and beyond to make sure the security testing was completed on time and in full.

Alderon Games

Cyrex supported us with penetration testing and DDoS testing as we prepared to launch SCUM. Their expertise was instrumental in identifying and helping us mitigate vulnerabilities, ensuring fair play and high availability for our players. The team was highly knowledgeable, responsive, and genuinely easy to work with, and we're looking forward to collaborating again.

GAMPIRES

Consistently impressed by the quality of their services. As specialized pure players, they demonstrate exceptional expertise in security.

Belgium National Lotto

Productive and insightful. Cyrex helped us uncover potential bottlenecks in Dying Light: The Beast before release, ensuring a smoother player experience.

Techland

In the regulated iGaming space, trust is everything. Cyrex delivered on every promise with great flexibility and professional expertise.

Gamio GG / Hogamba

Professional and enjoyable. Their team delivered detailed, thorough results with minimal effort required on our part.

Stunlock Studios

Cyrex are market leaders in security testing and played a key role in preparing our games for launch. Their detailed reports, complete with suggested actions, gave us the insight and confidence needed to ensure our game was secure, stable, and ready from day one.

Sumo Digital

Thanks to their thorough analysis of our network infrastructure, we were able to identify and solve critical security risks effectively.

Diaz Sunprotection

Crucial expertise for the launch of Dune: Awakening. They were highly responsive and instrumental in resolving security and performance issues.

Funcom

Cyrex are clearly the market leader. They go beyond simple API endpoint testing and offer full player representative load testing. The output quality of their reports is extremely high and they provide actionable feedback for development teams. Highly recommend. 10/10.

Tencent

The reports are clear and enable us to enhance our cybersecurity posture, with some improvements being implementable in-house. All Cyrex employees are very helpful and deliver excellent work.

Mentoring Systems

After a year of collaborating with Cyrex on multiple game security assessments, their team has been instrumental in helping us identify and address security concerns. They take a structured, methodical approach and always go the extra mile.

Amazon Games

Professional, efficient, and always willing to go the extra mile. They respected every deadline despite the complexity of the task.

Merkator

Fast, precise, and easy to work with. They helped us assess our product's cybersecurity with total efficiency.

Enersee

Extremely knowledgeable and fast to respond. Cyrex adapts quickly to our needs as we grow, making them an absolute pleasure to work with.

Faraway

Our collaboration with Cyrex proved to be successful. They conducted a thorough assessment of security measures for our e-commerce brand, providing high-quality testing and comprehensive reporting.

Beauty Pie

Cyrex played a crucial role in bolstering our cybersecurity through their pen testing services. Their team not only identified vulnerabilities but also provided clear and actionable recommendations to enhance our security posture.

Bingli

Working with Cyrex is great — the team is distinguished not only by their professionalism but also their flexibility to adapt to any project. Their expertise assisted us in identifying improvement opportunities through penetration and load testing.

PLAION

Working with Cyrex on security and load testing was a game-changer. Their unparalleled expertise and specialized services raised the bar, equipping us with the insights and confidence needed to address security and scalability challenges with ease.

Caged Element

Cyrex made penetration testing a breeze. Their insights are spot-on and their understanding of the gaming industry is exceptional.

AccelByte

Working with them is a pleasure — they are friendly, dynamic, and diligent. They have always gone above and beyond what was expected and always seek to provide as much value and insight as possible.

Curve

Their service was comprehensive, including analysis of game RPCs as well as backend services. The Cyrex team was effectively able to validate our work from a security standpoint and provided extremely valuable feedback we were able to address prior to Wayfinder going live.

Digital Extremes

Cyrex's expertise in Web3 was a massive boost to our small team and enabled us to expand more than expected. Always very responsive and attentive to details.

BLDNG BLCK Studios

Cyrex helps us comply with the highest security standards required by Fortune 500 companies. Their knowledge and communication are top-tier.

Cortical.io

Invaluable for our blockchain products. Their thorough investigations ensure a safer environment for our users and players.

Project Seed

Cyrex is highly specialised in online game security testing. With their help our team was able to audit and address potential infrastructure weak points. We strongly recommend Cyrex for anyone looking for a collaborative team with their eyes on the ball.

Joyride

From the start of our partnership, Cyrex has been reliable, professional, and easy to work with. With their expertise, we have been able to make our systems well-protected, robust, and efficient. 100% recommended!

PortalOne

A smooth collaboration from start to finish. The team provided a timely, in-depth report with fast and transparent communication.

Cheqroom

Cyrex earned our trust through deep domain knowledge and high-quality deliverables. They are the experts for securing complex software and platforms.

Immutable

Cyrex have been consistently great security testing partners for us across a number of complex projects. We are consistently impressed by the quality of work we see. Cyrex keeps us one step ahead of our attackers.

Improbable

They are extremely knowledgeable, capable, and very flexible — partnering with us and adjusting processes and communication to suit our needs. We are very much looking forward to an ongoing relationship.

Mythical Games

Space Punks' audit was thorough and gave us confidence in the security and scalability of the game. The way the team operates is a showcase of great balance between structure and flexibility.

Flying Wild Hog

Cyrex helped us improve the overall security of our platform. They work independently, to the point, and with security expertise relevant to modern web platforms. It's a pleasure to work with them.

Hive CPQ

A key partner in scaling our multiplayer capabilities. Cyrex delivers quality, flexibility, and results that greatly benefit our live service games.

Avalanche Studios

Cyrex has proven to be a deeply specialised security firm incredibly experienced in the gaming industry. They worked on a wide range of assets and consistently delivered excellent results exceeding industry standards.

Plarium

The security audits are always splendid. With the extensive reporting and risk assessment, our developers can effectively patch vulnerabilities.

Gameforge

Cyrex are security natives — they quickly adapt to your security needs. You don't need to go for the big 4 or look for the lonely security expert. Cyrex is right in the middle.

Christelijke Mutualiteit

The Cyrex team have proven themselves multiple times in the security field. They are the perfect team to review the security level of your infrastructure. They know what they are doing, hence the excellent results.

Vandelanotte

The Cyrex team was a key partner in our security strategy and helped us in the development of key security components in our products. With their diverse expertise, they were the perfect match.

Ibanity

Cyrex were both very professional and very easy to work with. There was very little preparation needed from our side, and the report they presented was useful, in-depth, and easy to use as a blueprint for security hardening.

Sharkmob

Communication was smooth and really easy, which is really important when working against a tight deadline. Cyrex's analysis and tests were precise and really well explained, without sacrificing agility or comprehensiveness.

Jigstack

When thinking about next generation solutions in terms of Cyber and IT, Cyrex has by far been the best party to us. Their expertise in the technology field is beyond limits — they have always delivered the impossible.

MoGi Group

Discovering these issues early has probably saved us a ton of dollars and headaches fighting hackers and corrupted data. We were really impressed by the skills Cyrex proved to hold. We will continue to work with Cyrex — it's a great business case with a great ROI.

MovieStarPlanet

The report contains a clear description of each problem, including possible solutions and advice for further development. We are reassured that our platform is well secured.

Ludwig

The agile and efficient work done by Cyrex was a perfect fit for our team. We needed to prove our breach protocol and system security to one of our biggest customers — Cyrex delivered exactly that.

Meet Roger

Cyrex assisted us in tackling some of our biggest architecture challenges, which resulted in extending our online service offering with extra features.

VITO / ESA

Customers can expect an experienced, adaptable team. Cyrex react very professionally and always go the extra mile to deliver.

MobieTrain

The Cyrex team helped us set up an API Sandbox environment. Everything was delivered accordingly and with the necessary training to continue the development ourselves.

BNP Paribas Fortis

Cyrex thought alongside us from a business perspective which made sure we were developing the things that matter in the correct way. Their flexibility and technical support was much appreciated.

Bolt Energie

The guys at Cyrex have the knowledge and courage to get their hands dirty for innovation.

TUI / Jet Air

Efficiency, thoroughness, and an ability to quickly understand the scope of the security exercise are their assets. An optimal collaboration.

Codabox

Every time they've been flexible and constructive while delivering qualitative work. They require minimal onboarding and can think along with us as a startup.

Daltix

Cyrex provided us with a bespoke service that we could not find anywhere else but desperately needed. Working with their engineers was a pleasure from the opening conversations through stress testing and penetration testing, and delivered results that gave our team confidence that we were ready to go live.

System Era Softworks

The experience was excellent from start to finish. The engagement ran smoothly, and the Cyrex team showed great flexibility in accommodating last-minute changes without missing a beat. They were professional throughout and delivered solid work at a fair price. We'd gladly work with them again and recommend them to anyone looking for a reliable engineering partner.

Moon Studios

After some frustrating experiences with vendors in the past, working with Cyrex was a refreshing change. They hit the ground running and had things up and running quickly. What stood out was how little they needed from us — minimal resources and few questions, which freed up our team to stay focused on building the game. Cyrex went above and beyond to make sure the security testing was completed on time and in full.

Alderon Games

Cyrex supported us with penetration testing and DDoS testing as we prepared to launch SCUM. Their expertise was instrumental in identifying and helping us mitigate vulnerabilities, ensuring fair play and high availability for our players. The team was highly knowledgeable, responsive, and genuinely easy to work with, and we're looking forward to collaborating again.

GAMPIRES

Consistently impressed by the quality of their services. As specialized pure players, they demonstrate exceptional expertise in security.

Belgium National Lotto

Productive and insightful. Cyrex helped us uncover potential bottlenecks in Dying Light: The Beast before release, ensuring a smoother player experience.

Techland

In the regulated iGaming space, trust is everything. Cyrex delivered on every promise with great flexibility and professional expertise.

Gamio GG / Hogamba

Professional and enjoyable. Their team delivered detailed, thorough results with minimal effort required on our part.

Stunlock Studios

Cyrex are market leaders in security testing and played a key role in preparing our games for launch. Their detailed reports, complete with suggested actions, gave us the insight and confidence needed to ensure our game was secure, stable, and ready from day one.

Sumo Digital

Thanks to their thorough analysis of our network infrastructure, we were able to identify and solve critical security risks effectively.

Diaz Sunprotection

Crucial expertise for the launch of Dune: Awakening. They were highly responsive and instrumental in resolving security and performance issues.

Funcom

Cyrex are clearly the market leader. They go beyond simple API endpoint testing and offer full player representative load testing. The output quality of their reports is extremely high and they provide actionable feedback for development teams. Highly recommend. 10/10.

Tencent

The reports are clear and enable us to enhance our cybersecurity posture, with some improvements being implementable in-house. All Cyrex employees are very helpful and deliver excellent work.

Mentoring Systems

After a year of collaborating with Cyrex on multiple game security assessments, their team has been instrumental in helping us identify and address security concerns. They take a structured, methodical approach and always go the extra mile.

Amazon Games

Professional, efficient, and always willing to go the extra mile. They respected every deadline despite the complexity of the task.

Merkator

Fast, precise, and easy to work with. They helped us assess our product's cybersecurity with total efficiency.

Enersee

Extremely knowledgeable and fast to respond. Cyrex adapts quickly to our needs as we grow, making them an absolute pleasure to work with.

Faraway

Our collaboration with Cyrex proved to be successful. They conducted a thorough assessment of security measures for our e-commerce brand, providing high-quality testing and comprehensive reporting.

Beauty Pie

Cyrex played a crucial role in bolstering our cybersecurity through their pen testing services. Their team not only identified vulnerabilities but also provided clear and actionable recommendations to enhance our security posture.

Bingli

Working with Cyrex is great — the team is distinguished not only by their professionalism but also their flexibility to adapt to any project. Their expertise assisted us in identifying improvement opportunities through penetration and load testing.

PLAION

Working with Cyrex on security and load testing was a game-changer. Their unparalleled expertise and specialized services raised the bar, equipping us with the insights and confidence needed to address security and scalability challenges with ease.

Caged Element

Cyrex made penetration testing a breeze. Their insights are spot-on and their understanding of the gaming industry is exceptional.

AccelByte

Working with them is a pleasure — they are friendly, dynamic, and diligent. They have always gone above and beyond what was expected and always seek to provide as much value and insight as possible.

Curve

Their service was comprehensive, including analysis of game RPCs as well as backend services. The Cyrex team was effectively able to validate our work from a security standpoint and provided extremely valuable feedback we were able to address prior to Wayfinder going live.

Digital Extremes

Cyrex's expertise in Web3 was a massive boost to our small team and enabled us to expand more than expected. Always very responsive and attentive to details.

BLDNG BLCK Studios

Cyrex helps us comply with the highest security standards required by Fortune 500 companies. Their knowledge and communication are top-tier.

Cortical.io

Invaluable for our blockchain products. Their thorough investigations ensure a safer environment for our users and players.

Project Seed

Cyrex is highly specialised in online game security testing. With their help our team was able to audit and address potential infrastructure weak points. We strongly recommend Cyrex for anyone looking for a collaborative team with their eyes on the ball.

Joyride

From the start of our partnership, Cyrex has been reliable, professional, and easy to work with. With their expertise, we have been able to make our systems well-protected, robust, and efficient. 100% recommended!

PortalOne

A smooth collaboration from start to finish. The team provided a timely, in-depth report with fast and transparent communication.

Cheqroom

Cyrex earned our trust through deep domain knowledge and high-quality deliverables. They are the experts for securing complex software and platforms.

Immutable

Cyrex have been consistently great security testing partners for us across a number of complex projects. We are consistently impressed by the quality of work we see. Cyrex keeps us one step ahead of our attackers.

Improbable

They are extremely knowledgeable, capable, and very flexible — partnering with us and adjusting processes and communication to suit our needs. We are very much looking forward to an ongoing relationship.

Mythical Games

Space Punks' audit was thorough and gave us confidence in the security and scalability of the game. The way the team operates is a showcase of great balance between structure and flexibility.

Flying Wild Hog

Cyrex helped us improve the overall security of our platform. They work independently, to the point, and with security expertise relevant to modern web platforms. It's a pleasure to work with them.

Hive CPQ

A key partner in scaling our multiplayer capabilities. Cyrex delivers quality, flexibility, and results that greatly benefit our live service games.

Avalanche Studios

Cyrex has proven to be a deeply specialised security firm incredibly experienced in the gaming industry. They worked on a wide range of assets and consistently delivered excellent results exceeding industry standards.

Plarium

The security audits are always splendid. With the extensive reporting and risk assessment, our developers can effectively patch vulnerabilities.

Gameforge

Cyrex are security natives — they quickly adapt to your security needs. You don't need to go for the big 4 or look for the lonely security expert. Cyrex is right in the middle.

Christelijke Mutualiteit

The Cyrex team have proven themselves multiple times in the security field. They are the perfect team to review the security level of your infrastructure. They know what they are doing, hence the excellent results.

Vandelanotte

The Cyrex team was a key partner in our security strategy and helped us in the development of key security components in our products. With their diverse expertise, they were the perfect match.

Ibanity

Cyrex were both very professional and very easy to work with. There was very little preparation needed from our side, and the report they presented was useful, in-depth, and easy to use as a blueprint for security hardening.

Sharkmob

Communication was smooth and really easy, which is really important when working against a tight deadline. Cyrex's analysis and tests were precise and really well explained, without sacrificing agility or comprehensiveness.

Jigstack

When thinking about next generation solutions in terms of Cyber and IT, Cyrex has by far been the best party to us. Their expertise in the technology field is beyond limits — they have always delivered the impossible.

MoGi Group

Discovering these issues early has probably saved us a ton of dollars and headaches fighting hackers and corrupted data. We were really impressed by the skills Cyrex proved to hold. We will continue to work with Cyrex — it's a great business case with a great ROI.

MovieStarPlanet

The report contains a clear description of each problem, including possible solutions and advice for further development. We are reassured that our platform is well secured.

Ludwig

The agile and efficient work done by Cyrex was a perfect fit for our team. We needed to prove our breach protocol and system security to one of our biggest customers — Cyrex delivered exactly that.

Meet Roger

Cyrex assisted us in tackling some of our biggest architecture challenges, which resulted in extending our online service offering with extra features.

VITO / ESA

Customers can expect an experienced, adaptable team. Cyrex react very professionally and always go the extra mile to deliver.

MobieTrain

The Cyrex team helped us set up an API Sandbox environment. Everything was delivered accordingly and with the necessary training to continue the development ourselves.

BNP Paribas Fortis

Cyrex thought alongside us from a business perspective which made sure we were developing the things that matter in the correct way. Their flexibility and technical support was much appreciated.

Bolt Energie

The guys at Cyrex have the knowledge and courage to get their hands dirty for innovation.

TUI / Jet Air

Efficiency, thoroughness, and an ability to quickly understand the scope of the security exercise are their assets. An optimal collaboration.

Codabox

Every time they've been flexible and constructive while delivering qualitative work. They require minimal onboarding and can think along with us as a startup.

Daltix

Cyrex provided us with a bespoke service that we could not find anywhere else but desperately needed. Working with their engineers was a pleasure from the opening conversations through stress testing and penetration testing, and delivered results that gave our team confidence that we were ready to go live.

System Era Softworks

The experience was excellent from start to finish. The engagement ran smoothly, and the Cyrex team showed great flexibility in accommodating last-minute changes without missing a beat. They were professional throughout and delivered solid work at a fair price. We'd gladly work with them again and recommend them to anyone looking for a reliable engineering partner.

Moon Studios

After some frustrating experiences with vendors in the past, working with Cyrex was a refreshing change. They hit the ground running and had things up and running quickly. What stood out was how little they needed from us — minimal resources and few questions, which freed up our team to stay focused on building the game. Cyrex went above and beyond to make sure the security testing was completed on time and in full.

Alderon Games

Cyrex supported us with penetration testing and DDoS testing as we prepared to launch SCUM. Their expertise was instrumental in identifying and helping us mitigate vulnerabilities, ensuring fair play and high availability for our players. The team was highly knowledgeable, responsive, and genuinely easy to work with, and we're looking forward to collaborating again.

GAMPIRES

Consistently impressed by the quality of their services. As specialized pure players, they demonstrate exceptional expertise in security.

Belgium National Lotto

Productive and insightful. Cyrex helped us uncover potential bottlenecks in Dying Light: The Beast before release, ensuring a smoother player experience.

Techland

In the regulated iGaming space, trust is everything. Cyrex delivered on every promise with great flexibility and professional expertise.

Gamio GG / Hogamba

Professional and enjoyable. Their team delivered detailed, thorough results with minimal effort required on our part.

Stunlock Studios

Cyrex are market leaders in security testing and played a key role in preparing our games for launch. Their detailed reports, complete with suggested actions, gave us the insight and confidence needed to ensure our game was secure, stable, and ready from day one.

Sumo Digital

Thanks to their thorough analysis of our network infrastructure, we were able to identify and solve critical security risks effectively.

Diaz Sunprotection

Crucial expertise for the launch of Dune: Awakening. They were highly responsive and instrumental in resolving security and performance issues.

Funcom

Cyrex are clearly the market leader. They go beyond simple API endpoint testing and offer full player representative load testing. The output quality of their reports is extremely high and they provide actionable feedback for development teams. Highly recommend. 10/10.

Tencent

The reports are clear and enable us to enhance our cybersecurity posture, with some improvements being implementable in-house. All Cyrex employees are very helpful and deliver excellent work.

Mentoring Systems

After a year of collaborating with Cyrex on multiple game security assessments, their team has been instrumental in helping us identify and address security concerns. They take a structured, methodical approach and always go the extra mile.

Amazon Games

Professional, efficient, and always willing to go the extra mile. They respected every deadline despite the complexity of the task.

Merkator

Fast, precise, and easy to work with. They helped us assess our product's cybersecurity with total efficiency.

Enersee

Extremely knowledgeable and fast to respond. Cyrex adapts quickly to our needs as we grow, making them an absolute pleasure to work with.

Faraway

Our collaboration with Cyrex proved to be successful. They conducted a thorough assessment of security measures for our e-commerce brand, providing high-quality testing and comprehensive reporting.

Beauty Pie

Cyrex played a crucial role in bolstering our cybersecurity through their pen testing services. Their team not only identified vulnerabilities but also provided clear and actionable recommendations to enhance our security posture.

Bingli

Working with Cyrex is great — the team is distinguished not only by their professionalism but also their flexibility to adapt to any project. Their expertise assisted us in identifying improvement opportunities through penetration and load testing.

PLAION

Working with Cyrex on security and load testing was a game-changer. Their unparalleled expertise and specialized services raised the bar, equipping us with the insights and confidence needed to address security and scalability challenges with ease.

Caged Element

Cyrex made penetration testing a breeze. Their insights are spot-on and their understanding of the gaming industry is exceptional.

AccelByte

Working with them is a pleasure — they are friendly, dynamic, and diligent. They have always gone above and beyond what was expected and always seek to provide as much value and insight as possible.

Curve

Their service was comprehensive, including analysis of game RPCs as well as backend services. The Cyrex team was effectively able to validate our work from a security standpoint and provided extremely valuable feedback we were able to address prior to Wayfinder going live.

Digital Extremes

Cyrex's expertise in Web3 was a massive boost to our small team and enabled us to expand more than expected. Always very responsive and attentive to details.

BLDNG BLCK Studios

Cyrex helps us comply with the highest security standards required by Fortune 500 companies. Their knowledge and communication are top-tier.

Cortical.io

Invaluable for our blockchain products. Their thorough investigations ensure a safer environment for our users and players.

Project Seed

Cyrex is highly specialised in online game security testing. With their help our team was able to audit and address potential infrastructure weak points. We strongly recommend Cyrex for anyone looking for a collaborative team with their eyes on the ball.

Joyride

From the start of our partnership, Cyrex has been reliable, professional, and easy to work with. With their expertise, we have been able to make our systems well-protected, robust, and efficient. 100% recommended!

PortalOne

A smooth collaboration from start to finish. The team provided a timely, in-depth report with fast and transparent communication.

Cheqroom

Cyrex earned our trust through deep domain knowledge and high-quality deliverables. They are the experts for securing complex software and platforms.

Immutable

Cyrex have been consistently great security testing partners for us across a number of complex projects. We are consistently impressed by the quality of work we see. Cyrex keeps us one step ahead of our attackers.

Improbable

They are extremely knowledgeable, capable, and very flexible — partnering with us and adjusting processes and communication to suit our needs. We are very much looking forward to an ongoing relationship.

Mythical Games

Space Punks' audit was thorough and gave us confidence in the security and scalability of the game. The way the team operates is a showcase of great balance between structure and flexibility.

Flying Wild Hog

Cyrex helped us improve the overall security of our platform. They work independently, to the point, and with security expertise relevant to modern web platforms. It's a pleasure to work with them.

Hive CPQ

A key partner in scaling our multiplayer capabilities. Cyrex delivers quality, flexibility, and results that greatly benefit our live service games.

Avalanche Studios

Cyrex has proven to be a deeply specialised security firm incredibly experienced in the gaming industry. They worked on a wide range of assets and consistently delivered excellent results exceeding industry standards.

Plarium

The security audits are always splendid. With the extensive reporting and risk assessment, our developers can effectively patch vulnerabilities.

Gameforge

Cyrex are security natives — they quickly adapt to your security needs. You don't need to go for the big 4 or look for the lonely security expert. Cyrex is right in the middle.

Christelijke Mutualiteit

The Cyrex team have proven themselves multiple times in the security field. They are the perfect team to review the security level of your infrastructure. They know what they are doing, hence the excellent results.

Vandelanotte

The Cyrex team was a key partner in our security strategy and helped us in the development of key security components in our products. With their diverse expertise, they were the perfect match.

Ibanity

Cyrex were both very professional and very easy to work with. There was very little preparation needed from our side, and the report they presented was useful, in-depth, and easy to use as a blueprint for security hardening.

Sharkmob

Communication was smooth and really easy, which is really important when working against a tight deadline. Cyrex's analysis and tests were precise and really well explained, without sacrificing agility or comprehensiveness.

Jigstack

When thinking about next generation solutions in terms of Cyber and IT, Cyrex has by far been the best party to us. Their expertise in the technology field is beyond limits — they have always delivered the impossible.

MoGi Group

Discovering these issues early has probably saved us a ton of dollars and headaches fighting hackers and corrupted data. We were really impressed by the skills Cyrex proved to hold. We will continue to work with Cyrex — it's a great business case with a great ROI.

MovieStarPlanet

The report contains a clear description of each problem, including possible solutions and advice for further development. We are reassured that our platform is well secured.

Ludwig

The agile and efficient work done by Cyrex was a perfect fit for our team. We needed to prove our breach protocol and system security to one of our biggest customers — Cyrex delivered exactly that.

Meet Roger

Cyrex assisted us in tackling some of our biggest architecture challenges, which resulted in extending our online service offering with extra features.

VITO / ESA

Customers can expect an experienced, adaptable team. Cyrex react very professionally and always go the extra mile to deliver.

MobieTrain

The Cyrex team helped us set up an API Sandbox environment. Everything was delivered accordingly and with the necessary training to continue the development ourselves.

BNP Paribas Fortis

Cyrex thought alongside us from a business perspective which made sure we were developing the things that matter in the correct way. Their flexibility and technical support was much appreciated.

Bolt Energie

The guys at Cyrex have the knowledge and courage to get their hands dirty for innovation.

TUI / Jet Air

Efficiency, thoroughness, and an ability to quickly understand the scope of the security exercise are their assets. An optimal collaboration.

Codabox

Every time they've been flexible and constructive while delivering qualitative work. They require minimal onboarding and can think along with us as a startup.

Daltix
FAQ Background

Frequently Asked Questions

Test Infrastructure. Not Hope.

Swarm validates your backend before players do.

Simulate millions of concurrent connections with protocol-native traffic generation - no browser overhead, no guesswork. Know exactly how your infrastructure performs under real-world conditions before launch day.

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Multi-million CCU Capability
30+ Expert Engineers