David Caissy is a web application penetration tester with in-depth developer and IT Security background spanning over 17 years. He has extensive experience in conducting vulnerability assessments and penetration tests as well as providing training globally, amongst numerous other teaching engagements. He has worked for the Bank of Canada, the Department of National Defense, various government agencies and private companies. David has been teaching web application security in colleges, conferences and for many government agencies over the last decade.