Current function:

co-founder of:

Overview:

• Co-founder of TrustAlert in December 2001:
• Responsible for the technical aspects of the TrustAlert products.
• Responsible for the technical infrastructure of TrustAlert.
• Responsible for the TrustAlert remotly installed servers.
• From May 2000 till 1 December 2001 I was Security Manager Megaplex:
• Designing high secure network environments for major PKI applications including the design and implemetation of the Addtrust and Identrus CA
• Configuring firewalls from various vendors in these environments.
• Configuring Intrusion Detection Sytems (IDS) from various vendors in these environments.
• Designing high availibility server farms.
• From 1999 until 1-5-2000 I was Product Group Manager Security Services at Megaplex:
• Managing the Roccade Internet Security Center (RISC).
• Instructing classes as VeriSign Certified Instructor.
• Performing Hacking Demonstrations Internationally.
• Developing new network related products for Megaplex.
• From 1998 until 1999 I was IT consultant at Roccade Finance:
• Responsible for the Certification of several Firewalls of large governmental offices.
• Developing a firewall scan-method.
• Designing a Network Security Policy for several customers.
• Hardening NT- and Unix-systems exposed on the Internet.
• From September 1997 until January 1998 IT-consultant at DPFinance:
• Building, Implementing and documenting Firewall systems for large governmental sites.
• Writing a business plan for a security team.
• From 1996 until September 1997 I was consultant at Twinfo:
• Penetration tests at several firewalls.
• Implementing Firewalls.
• Writing and implementing specific application proxy's, (telnet-, FTP-, en HTTPD-protocols).
• Designing and implementing a Render Farm rendering 3D-animations. My task was to get the loadbalancing of the workload distributed over an array van Unix-machines in a 100Mb-netwerk environment working.
• From 1994 until 1994 Senior working for the Competence Center team at RCC:
• Assisting during the design and developing large WAN (GemNet) project:
  Platforms: Unix, DOS, Windows, Windows95.
• Assisting during the design and developing large WAN (GemNet) project (O-net):
  Platforms: Unix, Windows, Windows95.
• Installing firewall for VNG.
• From 1989 tot 1994 working for the A&P team at RCC:
• Writing PC-oriented network communication software. Connecting PC to DEC/VMS, OS/2, PC-LAN and IBM-mainframe.
• From 1988 until 1989 working for the Direct Computer Usage team at RCC:
• Building custom Dialog Manager procedures Making Easytrieve, Focus, SPSS-X en Script-VS procedures easier in use.
• From 1979 until 1987 senior programmer at RCC:
• Working on large projects (PN en CASO): Governmental salary systems.
• Instructor:
• TrustAlert: Master Class Security class for de Hogeschool van Amsterdam.
  From 2003 until now.
• TrustAlert: Live Hacking Demonstration.
  From 2002 until now.
• Megaplex: Live Hacking Demonstration.
  From 1998 until 2001.
• RCC: developed and trained programmers.
  From 1984 until 1987.
• RCC: developed and trained Distributed Processing.
  From 1993 until 1996.
• ROVC: freelance instructor "Microcomputer system technology".
  From 1990 until 1997.
• ROVC: freelance instructor "Datacom Technician".
  Since 1997.
• Other: Presentation Company Security policy.
  Since 1995.

Programming languages:

• C
• Perl
• Pascal
• Assembler
• COBOL
• COBOL/2
• Dialog Manager
• REXX
• Easytrieve
• Easytrieve plus
• DSU
• Gen DSU
• Printgen

Knowledge of the OS platforms:

• Unix
• Windows 3.xx, 95, NT
• Main frame MVS
• DOS
• Novell

Languages:

In addition to programming languages, I also enjoy human languages and speak Dutch, English, German, Czech and French to various degrees.