Detlef B

Freelance IT Consultant

Dec 2020 - Present • 5 yrs 7 mos

For several decades, I have worked successfully in the IT industry, providing remote support to businesses in the areas of hosting, server administration, Linux, databases, software development, automation, and process optimization. My primary focus is the analysis, processing, and quality assurance of large datasets, as well as the design and implementation of stable, maintainable systems. I place particular emphasis on a structured approach: identifying root causes, optimizing processes, and delivering sustainable long-term solutions. One of the projects I am especially proud of was my contribution to one of the largest data warehouse initiatives within the Metro Group. In this role, I was responsible for the development and processing of business-critical transactional data, gaining extensive experience in data quality management, transaction processing, and performance optimization. Today, I support organizations in addressing technical challenges related to servers, databases, automation, APIs, workflows, and modern AI-assisted processes. My objective remains consistent: to develop robust solutions that not only work effectively but also remain reliable and maintainable over the long term.

YouTube Channel Owner and Content Creator

Dec 2014 - Jun 2026 • 11 yrs 6 mos

**YouTube Channel Owner and Content Creator** Built and continuously managed an independent YouTube channel with more than **1,100 subscribers** and over **1,000 published videos**. **Key Responsibilities:** * Video production, editing, and publishing * YouTube channel management * Content organization and cataloging * Technical optimization of content creation workflows * Long-term development and maintenance of a video library * Analysis of audience reach, engagement, and user interactions Through operating and growing the channel, I gained extensive hands-on experience in content creation, digital media processing, video publishing, and the technical workflows associated with online content distribution. **Channel:** https://www.youtube.com/@cockpitcomputer

Founder and Developer of Anti-Attacks.com

Dec 2006 - Dec 2024 • 18 yrs

Designed, developed, and operated a proprietary system for detecting and mitigating automated attacks against Linux servers and hosting infrastructures. The platform aggregated security-relevant events from multiple sources and generated centralized blocking and reputation lists. Several server operators used the system to automatically protect their infrastructure against ongoing attacks. Key Focus Areas Development of a distributed security and reputation system Analysis and processing of large-scale security event data Automated attack detection and blocking mechanisms Linux server security and hardening Design and operation of centralized blocklists Integration with external security tools and systems Extensibility for Fail2Ban, IDS, and honeypot solutions Long-term operation and continuous development over a period of 17 years The project was primarily targeted at hosting providers, data centers, and operators of large-scale server infrastructures. The long-term development and production usage provided extensive experience in Linux systems, cybersecurity, data analysis, automation, and scalable system architecture. Skills & Competencies Acquired Cybersecurity and Threat Detection Linux Server Security and Hardening Distributed Security Systems Reputation Systems and Blacklisting Mechanisms Network Security and Intrusion Prevention Security Event Data Analysis Log Processing and Correlation Automation of Security Workflows IDS/IPS Integration (Intrusion Detection/Prevention Systems) Fail2Ban Configuration and Extension Honeypot Integration and Analysis Scalable System Architecture Backend System Design API and System Integration Data Aggregation and Processing Real-Time Attack Detection Infrastructure Security for Hosting Environments System Monitoring and Alerting Scripting and Automation Incident Response and Mitigation Strategies Long-Term System Maintenance and Evolution Performance and Reliability Optimization