About SQL Injection: http://en.wikipedia.org/wiki/SQL_injection http://www.securiteam.com/securityreviews/5DP0N1P76E.html http://www.unixwiz.net/techtips/sql-injection.html About J2EE Filters: http://java.sun.com/products/servlet/Filters.html http://www.javaworld.com/javaworld/jw-06-2001/jw-0622-filters.html http://javaboutique.internet.com/tutorials/Servlet_Filters/
About SQL Injection:
About J2EE Filters: