After his Master's degree in Computer Science and Engineering from Linköping University (Sweden) and Nanyang Technological University (Singapore) he pursued a PhD in application security. Last paper still pending but John's research publications can be found here.
John started the Swedish OWASP Chapter in 2007 and has since been leader and co-leader. In 2010 he chaired the most successful OWASP AppSec EU conference so far – OWASP AppSec Research 2010. John along with the Swedish chapter are listed as contributors to OWASP Top 10 2010.
For more detailed information, please see my public LinkedIn page.