Ralf Siebelt Email & Phone Number
Chief Information Security Officer (CISO) @ Gemeente Hollands Kroon
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Ralf Siebelt Location
- Netherlands
Ralf Siebelt Work
- Chief Information Security Officer (CISO) @ (January 2026 - Present)
- Senior Information Security Consultant @ (January 2025 - Present)
- Information Security Consultant (hired) @ (January 2019 - December 2024)
- Owner and Senior information security consultant and interim (C)ISO @ (July 2017 - Present)
- Engagement Security Officer @ (April 2025 - December 2025)
- Chief Information Security Officer (CISO) (hired) @ (August 2023 - September 2025)
Ralf Siebelt Education
- Prowareness
Team Kanban Practitioner
2023-2023 - TFG Academy
CIPP/e (CIPM, CIPT)
2016-2016 - CISSP
CISSP (Information Security)
2007-2008 - Rabofacet icm Intercai
Opleiding tot netwerkspecialist
1997-1998 - Het Utrecht College / MBO College Versfelt-Ruygenhoek
MEAO Economisch-Juridisch (EJ)
1993-1996
Ralf Siebelt Skills
- ABDO 2019
- Banking
- Bedrijfscontinuïteit
- Beleid schrijven
- Beveiliging
- Business Analysis
- Business Continuity
- Business Continuity Planning
- CISA
- CISSP
- COBIT
- Change Management
- Cloud Computing
- Consultancydiensten
- Consulting
- Governance
- ICT
- ISMS
- ISO 27001
- ISO27001
- IT Audit
- IT Management
- IT Service Management
- ITIL
- Identity & Access Management (IAM)
- Incident Management
- Informatiebeveiliging
- Informatiebeveiligingsmanagement
- Informatietechnologie
- Information Security
- Information Security Management
- Leiderschap
- MS-Office
- Management
- Management Consulting
- NEN7510 ABDO ISO27001 ISO27002 BIO
- Networking
- Operational Risk Management
- PRINCE2
- Physical Security
- Process Management
- Projectmanagement
- Risicobeheer
- Risk Management
- Role Based Acess Contro (RBAC)
- SIEM
- Security
- Security Awareness
- Security Policy
- Vulnerability Management
- Leadership
- Social Media
- Financial Risk
- Role Based Acess Contro Rbac
- Identity And Access Management Iam
- Role Based Acess Contro
- Editing
- MS Office
- Identity and Access Management
Ralf Siebelt Summary
- Ralf Siebelt, based in Netherlands, is currently a Chief Information Security Officer (CISO) at Gemeente Hollands Kroon. Ralf Siebelt brings experience from previous roles at IBS Capital Allies, SBLT - Information Security Consultancy and Sogeti. Ralf Siebelt holds a 2023 - 2023 Team Kanban Practitioner @ Prowareness. With a robust skill set that includes ABDO 2019, Banking, Bedrijfscontinuïteit, Beleid schrijven, Beveiliging and more. Ralf Siebelt has 2 emails and 1 mobile phone numbers on RocketReach.
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