OWASP attempts to make videos of presentations made by there members and at there conferences concerning application security whenever possible. The slides for most of these presentations are available, linked to the conference agendas. In episode 2 it illustrates SQL Injection, discusses other injection attacks, covers basic fixes, and then recommends resources for further learning. Here are a couple of links on how to secure your SQL server SQL Injection Prevention Cheat Sheet XSS (Cross Site Scripting) Prevention Cheat Sheet
“The computer was born to solve problems that did not exist before.” – Bill Gates