OWASP Experts in Hamburg

Enrique Gallardo

Data Security

Last position:

Security Architect at Capgemini

I implemented a Zero-Trust architecture for robust, military-grade maritime container mini data centers based on VMware & Tanzu to support containerized GIS workloads for ground forces. The main focus was on securing communications, workload protection, and data access in contested electronic battle environments affected by jamming, interception, signal manipulation, and constantly changing operational conditions. I designed and architected use cases so that every element of workload, identity, and system could continue to operate independently and securely even in degraded or disrupted scenarios. In parallel, I defined the enterprise and solution security architecture with LeanIX, Bizzdesign, and HOPEX as enterprise architecture, repository, and governance platforms to maintain architecture inventory, relationships, traceability, target pictures, and security governance in complex environments. For the architectural designs, I used Sparx Enterprise Architect to describe formal architecture views, interfaces, trust boundaries, and system architecture in both IT and OT environments. IriusRisk was used for threat modeling of the solution to identify architecture-driven risks, derive security requirements, and detect countermeasures and design gaps directly from the solution models. Risk and compliance management was supported with Archer. Architecture decisions, control gaps, and operational risks were translated into controlled governance and auditable compliance measures. For documentation, collaboration, and visual design, I used Confluence to maintain Architecture Decision Records, Security Blueprints, and workflows. I used Lucidchart and draw.io to create design artifacts tailored to stakeholders. I also defined OT security concepts with support from electrical and mechanical engineers in the areas of oil, vehicle onboard systems, rail, power plants, pharma, gas turbines, and nuclear technology. I created the end-to-end OT security strategy, starting with global policy, developed into standards and procedures, and finally aligned with Bell-LaPadula, Purdue Model, SABSA, TOGAF ADM, CENELEC 50701, IEC 62443, and NIST standards. In addition, I worked with engineering team leads to identify critical KBP assets and place them under protective measures that segmented SCADA, PLC, and HMI assets. I drove collaboration between Security, IT, and OT teams to create standardized workflows and use cases for the OT security solution catalog, while integrating Defense-in-Depth and Zero-Trust principles into operational environments. A key part of my work was integrating multidisciplinary engineering, security, and operations stakeholders into a unified security blueprinting strategy and ensuring that architecture, threat modeling, governance, and documentation were technically strong and operationally practical.

Rainer Diekmann

Enterprise Architecture Management / Backend Software Developer

Last position:

Enterprise Architecture Management / Backend Software Developer at Polizei Hamburg

Several projects in a police context
Model and document police procedures/projects with Archimate (as-is/to-be) in the context of P20 (BKA)
Create software architectures with microservices
POC development with Springboot/Docker/Kubernetes
Project size: 10 people
Enterprise architecture management with Togaf and Archimate
Backend software development Springboot
DevOps with Kubernetes
Implemented using: Java 17/21, Springboot 3, P20 architecture, Togaf, Archimate

Maryam Mouzarani

AI Red Team Engineer

Last position:

AI Red Team Engineer at Applause

Performed security assessments and penetration testing on Microsoft AI models for text, image, and video generation.
Conducted prompt injection attacks through diverse input vectors, including crafted text, steganographic images, and manipulated visual elements (e.g., varying opacity and embedded content).

Andreas Steffan

Lead Developer

Last position:

Lead Developer at Software

Extended the document management system with a standard CMIS (Content Management Interoperability Services) interface
Implemented CMIS core services like navigation, access rights, search, CRUD operations, and versioning in Java
Implemented based on RESTful / OpenAPI services
Delivered as a fat-jar and native container image
Deployed on-premises and serverlessly as an Azure Container Application using Terraform
Improved team autonomy through infrastructure engineering and short feedback loops
Established observability with OpenTelemetry, Azure Monitor, and Azure Logic Apps
Introduced Terraform and trunk-based development processes
Ensured quality with BDD tests in C# using SpecFlow and Testcontainers
Created Azure DevOps pipeline integration tests
Introduced cloud deployment processes
Trained staff in cloud and Terraform

Mbah Sama

Software Tester for Banking Requirements

Last position:

Software Tester for Banking Requirements at comdirect

Responsibility for testing and quality assurance of application processes
Creation and execution of test cases based on defined acceptance criteria
Documentation of deviations and analysis, as well as initiation of necessary corrective actions
Ensuring the flow of information within the team and with other specialist departments
Maintenance and further development of test automation
Adapting Selenium-based automation to every release and sprint change
Extending test automation with new processes
Performing security tests
Identifying typical vulnerabilities (e.g. XSS, SQL injection, insecure headers) through automated tests in the CI/CD flow
Use of technologies Selenium (including integration with security scanners such as OWASP ZAP), Unix/SQL environments and optionally Cypress, SAP, C#, Java, GitLab, Jira, Confluence, REST API, Postman, HP-ALM, SSI, Octane, WinSCP.

Mark Plaatsman

Full-Stack Software Developer, Product Data Import