Application Penetration Testing
Web, mobile and API testing that targets authentication, session handling, input validation, business logic and privilege escalation.
Learn more about application penetration testing →Penetration testing & application security
Find the weaknesses. Build the program that keeps them fixed.
Caesium55 tests your applications, networks and AI systems the way real attackers do, then helps you build the security program, champions and tooling to stay secure.
- 23+ yearsin IT security
- 23 certificationsheld by our lead assessor
- 100% manualvalidation of every finding
- 45-day retestincluded with every engagement
Test
Penetration testing that goes past the scanner
Automated tools are only the starting point. Every finding is researched, exploited by hand and proven before it reaches your report, so you get no false positives, just what an attacker could really do.
Network Penetration Testing
External and internal testing across all 65,536 TCP and UDP ports, plus cloud environments, firewalls and network segmentation.
Learn more about network penetration testing →New
AI Penetration Testing
Testing for LLM apps, chatbots and agents: prompt injection, jailbreaks, data leakage, RAG pipeline poisoning and tool abuse, mapped to the OWASP Top 10 for LLMs.
Learn more about AI penetration testing →Build
Application security that sticks
A pentest shows where you stand today. We help you build the program, the people and the pipeline that keep new weaknesses from shipping.
Application Security Program
We use the OWASP SAMM framework to measure your current maturity, set a roadmap, implement the practices and track your progress.
Learn more about application security programs →Security Champion Program
We design and launch a program that turns developers into security advocates inside every team, including recruiting, training, cadence and metrics.
Learn more about security champion programs →Security Tooling on Kubernetes
We deploy the same tools used in our pentests, packaged as Helm charts, on any Kubernetes cloud.
- Semgrep
- Trivy
- Nikto
- OWASP Dependency-Check
- ggshield
How we work
The job isn’t done until the findings are fixed
Scope
We learn your environment, what you have and why, before a single test runs.
Test
Recon, enumeration and attack, combining best-of-breed tools with hands-on testing.
Validate
Every finding is exploited by hand, safely, to prove its real impact.
Report
A clear, audit-ready report with steps to reproduce and prioritized fixes.
Retest
We work with your team and retest the remediated findings within 45 days.
Our lead assessor
Damien Suggs
CISSP · SANS GPEN · MCSE · CCNA · CCSA · CCSE
Damien has more than 23 years in IT security across crypto and blockchain, telecommunications, the public sector, healthcare and retail. He specializes in testing web and mobile applications, IoT, cloud environments and networks, and in building application security programs that become part of an organization’s culture.
He served as president of the ISSA Metro Atlanta Chapter for ten years. The chapter was named ISSA International Chapter of the Year in 2011 and 2012.
Read Damien’s full bio →Ready to see what an attacker sees?
Tell us about your applications, network or AI systems, and we’ll scope an engagement that fits.