Application Penetration Testing
Web, mobile and API testing for authentication, access control, input handling and business logic.
Learn more about application penetration testing →Penetration testing · Application security · Secure cloud
Find it. Fix it. Keep it fixed.
Caesium55 tests your applications, networks and AI systems the way real attackers do. Together with our engineering partner CloudLumen, we build the pipelines, Kubernetes platforms and AWS infrastructure that keep them secure.
- 23+ yearsin IT security
- 23 certificationsheld by our lead assessor
- AWS DevOps Procertified engineering partner
- 45-day retestincluded with every pentest
One partner, the whole lifecycle
From the first finding to a pipeline that stops the next one
Most firms hand you a report and leave. We test, help you build the program that fixes the root causes, and, with CloudLumen, engineer the cloud and DevSecOps platform that keeps new weaknesses from shipping.
01 · Test
Find the weaknesses
Application, network and AI penetration testing with every finding proven by hand.
Delivered by Caesium5502 · Build
Fix the root causes
OWASP SAMM programs, security champions and the scanners from our pentests, running in your environment.
Delivered by Caesium5503 · Operate
Keep it secure
Secure AWS infrastructure, DevSecOps pipelines with security checks at every stage, and Kubernetes platforms built to last.
Delivered with CloudLumenTest
Penetration testing that goes past the scanner
Network Penetration Testing
External, internal and cloud testing across all 65,536 TCP and UDP ports, plus segmentation.
Learn more about network penetration testing →New
AI Penetration Testing
LLM apps, chatbots and agents: prompt injection, data leakage, RAG poisoning and tool abuse, mapped to the OWASP Top 10 for LLMs.
Learn more about AI penetration testing →Build
Application security that sticks
Application Security Program
Measure maturity with OWASP SAMM, set a roadmap and implement the practices that matter most.
Learn more about application security programs →Security Champion Program
A trained security advocate inside every development team, with training, cadence and metrics.
Learn more about security champion programs →With CloudLumen
Security Tooling on Kubernetes
The scanners from our pentests, packaged as Helm charts and run on Amazon EKS or any Kubernetes cluster, engineered with CloudLumen.
- Semgrep
- Trivy
- Nikto
- OWASP Dependency-Check
- ggshield
Operate · with CloudLumen
Secure cloud and DevSecOps engineering
Our partner CloudLumen brings AWS-certified cloud, DevOps and AI engineering. Their engineers build and run the platform; we make sure it’s secure and prove it.
AWS Infrastructure Modernization
Bring costly or inconsistent AWS environments under control with infrastructure as code and documentation your team can maintain.
DevSecOps & CI/CD Engineering
Automated pipelines that scan code, dependencies and container images at every stage, with safe blue/green and canary releases.
Cloud Security & Reliability
Least-privilege IAM, logging and monitoring, backup validation and runbooks, supporting SOC 2 and HIPAA readiness.
Embedded DevOps Engineering
Cloud engineers who join your team for a project or ongoing capacity, working in your repositories and change process.
Also available:
Cloud Migration FinOps & Cost Optimization AI & ML on AWSHow the partnership works
Pentest findings become pipeline guardrails
- 01 · Caesium55
Test
We find and prove what an attacker could do today.
- 02 · Caesium55
Prioritize
Findings map to root causes and a remediation roadmap.
- 03 · CloudLumen
Engineer
Fixes land as code: hardened AWS, least-privilege IAM, secure pipelines.
- 04 · Together
Automate
Our scanners run on your Kubernetes platform in every build.
- 05 · Caesium55
Retest
We confirm the gaps are closed within 45 days.
Ways to work with us
Start where you are
Penetration test
Application, network or AI testing with an audit-ready report and retest.
Cloud infrastructure assessment
Findings report, prioritized recommendations and an implementation roadmap.
Project-based engineering
A defined security, automation or migration project with milestones and handover.
Embedded engineering partner
Ongoing engineering capacity with agreed priorities and regular reviews.
Who you’ll work with
Caesium55 · Lead assessor
Damien Suggs
CISSP · GPEN · Secure AI Systems
23+ years in application security, from hands-on pentesting to building product security programs.
Meet Damien →Engineering partner
CloudLumen
AWS Certified DevOps Engineer – Professional
AWS cloud architecture, DevOps and AI consulting for growing businesses, built on Terraform, Kubernetes, Docker, GitHub Actions and Datadog.
Visit CloudLumen →Free 30-minute discovery call
Ready to see what an attacker sees?
Meet with Caesium55 and CloudLumen together. Tell us about your applications, cloud and pipelines, and we’ll recommend where to start, whether that’s a pentest, a security program or a secure cloud platform.