After a 30+ -year career in IT operations, IT security and IT audit, Han van Thoor decided to start his own consultancy business, providing consultancy and contracting in the areas of IT audit, IT Security and Digital Investigations in November 2019.

Han started his career in IT operations where he first had to manage a simple UNIX system while maintaining the accounts for a logistics company. Not long after, he was tasked to set up a Novell network for a company that manufacturing wellington boots. As this company grew, so did the network and Han set up an international network (pre-internet) using ISDN bridges between offices in the Netherlands, Ireland, the UK and Portugal.

His next stage in his career took him to migrate Novell to Microsoft Windows NT, and he also did a lot of software packaging using Microsoft System Management Server (the predecessor of SCCM). Furthermore, he assisted in the roll-out of a vast Windows network across a large chemical company in the Netherlands.

Before he moved to Ireland over 20 years ago, Han worked for an internet provider for schools, delivering secure Internet to 12,000 schools, serving approximately 2,000,000 users. Han was responsible for the day to day management of the server systems and their SLA’s and also headed up the IT security incident response team.

In Ireland, Han worked as IT security manager for a large IT Telecom company and certified their data centre against the internationally recognised ISO27001 standard.

He also managed an IT security company, handling security incident response for an Italian government institution and heading up the research and development for a managed security solution aimed at the small and medium enterprise business. As a qualified PCI-DSS Security Assessor, he also set up and lead PCI-DSS assessments for clients of the company. This company also achieved ISO27001 certification and Han was at that moment the first person in Ireland to have achieved this in two different companies.

Han then started working for Ireland’s largest Building Materials company as an IT auditor and assistant manager, where he performed audits against the international recognised COBIT standards; not only would he look at IT general controls, but also would perform vulnerability scans, penetration tests, data analytics, and project reviews. He also automated a number of system configuration checks using scripting and helped in setting up and support the Internal Audit Management System. 

Han helped setup the IT internal audit department for the major Irish and European fashion business and is currently working as ISO27001, 27017,27018, 27701,29119 and PCI-DSS assessor and consultant for any organisation from start up to large corporate to government.
Han is a Certified Ethical Hacker (CEH), a Certified Hacking Forensic Investigator (CHFI), a Certified Information Systems Auditor (CISA) and holds a  first class honors Master's Degree in Digital Investigations and Forensic Computing (UCD Dublin) .