Peter Prochaska is a Security Consultant for DATEV e.G, a big software company in Germany.
He is specialised in Webapplication-Security and secure PHP Programming.
Peter writes a monthly column for the german PHP Magazine together with Christopher Kunz.
Peter is an instructor about PHP and Security and has spoken at many conferences, including the International PHP Conference in FFM.
My own business Webpage: http://www.hipmedia.de