Run DoS simulations to test your defences

Test your system’s resilience under load with simulated DoS attacks that challenge your apps, infrastructure, and incident response playbooks.
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Denial of Service (DoS) Testing

Simulate DoS attacks to uncover system stress points

Understanding how your systems respond to a Denial-of-Service attack is crucial for resilience. Cythera runs controlled DoS simulations on your web apps, infrastructure, or entire internet connection to measure impact, validate your defences, and improve your response playbook.We tailor the engagement to your goals — from reviewing your incident plans to testing mitigation providers and validating system design under pressure.

  • DoS incident response plan review
  • Scenario-based tabletop exercises
  • Resilience assessment of architecture and design
  • High-volume traffic testing (Volumetric)
  • Layer 7 application-layer stress testing
Service detail

Why do you need a Denial of Service test?

From risk discovery to incident response – we’re here for you throughout the journey.

Review a DoS attacks impact

Clear, actionable report

This isn't about complexity. Your assessment comes with a clear, actionable report that identifies the risks and what to do next.

  • Run a sanctioned DoS attack to detect infrastructure weaknesses
  • Identify system, infrastructure and hosting exposures
  • Prioritise fixes and guide action

Our delivery process

How is it delivered

Move quickly from insight to action.
Identify inconsistencies
We analyse historical DNS data and cross-check it with your current domain list and ownership records to identify inconsistencies or risks.
Focus on the problem
We scan websites for performance issues, focusing on slow-loading pages and analysing error responses like 404s and 500s.
Review and analise
Our analysis reviews CDN deployment, user-level cache purging capabilities, and protections like CAPTCHA and rate-limiting controls applied to dynamic content.
Benefits

Why work with us

From identifying risks to responding quickly, we stay by your side throughout the journey.
Tailored to your environment
Cythera continuously monitors your systems to identify and flag potential threats before they cause disruption.
Clear, practical reporting
Cythera continuously monitors your systems to identify and flag potential threats before they cause disruption.
Support when it counts
Need help after the DoS assessment? We offer professional guidance, optional retests and immediate access to our specialist team if any underlying issues are uncovered.
What comes next

Expand your security coverage

From risk assessment to rapid response, we provide continuous support. Our comprehensive services help you stay proactive, address vulnerabilities quickly, and build lasting security strength.

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Web Filter, CASB & DLP (Cloud Access Security Broker & Data Loss Prevention)
Monitor and manage how users interact with cloud, web, and AI platforms — including movement of sensitive data.
Web Application Penetration Testing
Uncover hidden flaws in your web apps — from session handling to access controls — through in-depth security reviews.
Frequently asked questions

Frequently asked questions

From risk assessment to rapid response - we’re with you every step of the way.

What types of DoS attacks does Cythera simulate?

We tailor each engagement to your goals, including: Volumetric floods (UDP/TCP syn, amplification) to stress your bandwidth and edge protections, layer 7 application attacks (HTTP floods, slow-rate) to test web-server limits and application logic and Protocol-level tests (TCP state-exhaustion, malformed packets) to uncover infrastructure misconfigurations

How long does a DoS testing engagement take?

Typical engagements run from one to three days, depending on scope: One day for a focused volumetric stress test or L7 assessment or two- three days when including architectural reviews, incident-plan workshops and follow-up reporting. We’ll agree a schedule during scoping so it fits your operations and change-freeze windows.

Why should I conduct a DoS test?

A DoS test reveals how your environment behaves under sustained or volumetric load, and whether your incident response playbooks, rate-limiting or DDoS-protection services hold up. Early discovery of weaknesses means you can prioritise fixes, avoid unexpected downtime and meet compliance requirements around service availability.

Contact us

Talk to an expert

Please call our office number during normal business hours or submit a form below
Where to find us
If you experience a security breach outside normal working hours, please complete the form and we will respond as soon as possible.