Leon Strous is qualified as a registered IT-Auditor (RE) in the Dutch Association of Registered EDP-Auditors (NOREA) and also as a Certified Information Systems Auditor (CISA) in the international Information Systems Audit and Control Association (ISACA). He works for De Nederlandsche Bank (DNB), which is the central or reserve bank of the Netherlands, as IT auditor in the internal audit department and as overseer in the oversight department of the cash and payments division, focusing on the security of payment systems. Currently his main jobs are advancing business continuity and crisis management arrangements with the key players in the payments and securities clearing and settlement processes in the Netherlands and liaising between the financial sector and the government concerning critical infrastructure protection programs.
He has been active in many different positions in the Dutch Computer Society (NGI) since 1988 and in the International Federation for Information Processing (IFIP) since 1994. In IFIP he has chaired Technical Committee 11 on security and protection in information processing from 2001-2007, he was Vice-president from 2007-2009 and in August 2009, he was elected as President for the 2010-2013 term with a re-election in 2012 for the 2013-2016 term.
Leon has co-authored and co-edited publications in the area of information security and chaired / organized several international security conferences.