XML Security online "books"

http://free-ebook-collection.blogspot.com/2008/02/xml-security-free-download.html

I think that the book is so-so... but then again, you get what you pay for :-)



http://soasecurityarchitect.com/2008/02/15/ibm-websphere-datapower-soa-appliances-part-iii-xml-security-guide.aspx

A guide to XML security using IBM DataPower tools