Professional Cybersecurity Consulting
Financial Services & Enterprise Security
Current IT Security Officer in Luxembourg's banking sector with 15+ years of experience.
Remote-first security consultant serving clients across Europe and internationally.
Specialized in European Financial Services Security.
Penetration testing, compliance audits, and security assessments
tailored for banks, investment firms, and financial institutions.
Status: Available for Remote Engagements from September 2026
Be among the first to secure priority booking and exclusive early adopter benefits
Background & Expertise
Deep experience in financial services security with hands-on expertise across defensive and offensive security disciplines
💼 Professional Experience
- 15+ years in financial services IT and security (2009-Present)
- Current IT Security Officer in Luxembourg's banking sector
- 10+ years specialized security experience: SOC operations, penetration testing, compliance
- Former security roles at European Institutions
🔧 Technical Expertise
- SIEM management (IBM QRadar)
- DLP and vulnerability management
- Cloud security architecture
- OSINT and threat intelligence
- Compliance & audit support
- Third-party risk management
🎓 Certifications & Development
- OSCP certification (Q1 2026)
- Active security researcher
- Open-source tool developer
- View my security tools →
Early Access Benefits
Register now to secure exclusive advantages when services launch
Priority Booking
First access to available slots when services launch in September 2026
15% Launch Discount
Exclusive early adopter discount on your first security engagement
Free Assessment
Complimentary 30-minute security consultation (EUR 200 value)
Exclusive Insights
Quarterly security updates and Luxembourg compliance briefings
Free Professional Security Tools
Access our suite of professional-grade security utilities - no registration required
Email Header Analyzer
Analyze email headers for phishing indicators, spoofing, and security threats
Try ToolHash Generator & Verifier
Generate and verify cryptographic hashes (MD5, SHA-256, SHA-512, and more)
Try ToolCIDR Calculator
Calculate IP ranges, subnets, and network addressing for infrastructure planning
Try ToolIOC Defanger
Safely defang and refang malicious indicators for secure SOC sharing
Try ToolJWT Decoder
Decode and analyze JSON Web Tokens for security issues and debugging
Try ToolThese tools are used in our professional security assessments and available free to the community
Working Model
Secure, flexible, and professional remote collaboration
🌐 Fully Remote Operations
Secure collaboration infrastructure enabling professional engagements from anywhere
🇮🇧 Bilingual Service Delivery
French & English for all reporting and client communications
🕐 Flexible Timezone Coverage
Accommodating European and international clients across different time zones
🔒 Encrypted Communications
Secure, encrypted communication channels for all client interactions
📄 Digital Delivery
Comprehensive documentation and reporting delivered digitally
Professional Services
Comprehensive cybersecurity services for Luxembourg's financial sector
Penetration Testing
Comprehensive security assessments simulating real-world attacks to identify vulnerabilities before malicious actors do.
- Network penetration testing
- Web application security testing
- API security assessments
- Social engineering simulations
Compliance Audits
Expert guidance on regulatory compliance specific to Luxembourg's financial services requirements.
- GDPR compliance assessments
- DORA readiness evaluations
- NIS2 compliance support
- PCI-DSS auditing
Security Assessments
Thorough evaluation of your security posture with actionable recommendations for improvement.
- Infrastructure security review
- Security policy evaluation
- Incident response planning
- Security awareness training
Interested in these services?
Register for Early AccessTesting Methodology
Industry-standard frameworks and rigorous processes ensuring comprehensive, compliant security assessments
📑 Standards & Frameworks
- OWASP Testing Guide for web applications
- PTES (Penetration Testing Execution Standard) for infrastructure
- Comprehensive reporting with CVSS scoring
- Remediation guidance aligned with compliance frameworks
🛠 Engagement Process
- Scoping & planning with compliance requirements review
- Active testing phase with real-time communication
- Detailed technical and executive reporting
- Remediation support and retesting
🔒 Security & Confidentiality
- Secure communication channels throughout
- Encrypted data handling and storage
- Post-engagement support and verification
- NDA and confidentiality agreements standard
Register for Early Access
Secure your priority booking for September 2026 launch
Connect
🔧 Security Tools
Explore free security utilities
Professional-grade tools for security professionals
Questions about services?
contact [at] johlem [dot] net
🔒 Security Issues
Report vulnerabilities responsibly:
security [at] johlem [dot] net
View security.txt