Rick Grassmann

(formerly Aßmann)

IT security specialist

I am an OSCP certified ethical hacker with deep technical knowledge about web application and network security. Using advanced manual and automated penetration testing techniques I will find the vulnerabilities in your websites, applications, infrastructure and mobile apps.

Projects as a penetration tester

Execution of over 100 penetration tests

60%

Testing web applications

Execution according to OWASP Testing-Guide. Analysis of Single Page apps, Rest-APIs, authentication, static web pages etc.

20%

Network analysis

Scans of large company networks. Review of Firewall configuration.

10%

Review of OS configurations

Security assessment of Windows and Linux systems, web servers, VPNs, mail servers etc. Recommendations for server hardening.

10%

Testing mobile apps (Android, iOS) and fatclients (Windows)

Lokal authentication, secure data storage, API calls

Companies

rasotec

Cyber Security

rasotec.com

IT security consultant

SAYUBI

Software for restaurants

sayubi.com

fullstack developer

sequilox

AI consulting

sequilox.de

co-founder, machine learning engineer