During an investigation of database theft from an organization’s web site, it was determined that the
Structured Query Language (SQL) injection technique was used despite input validation with clientside scripting. Which of the following provides the GREATEST protection against the same attack
occurring again?

A.
Encrypt communications between the servers

B.
Encrypt the web server traffic

C.
Implement server-side filtering

D.
Filter outgoing traffic at the perimeter firewall