The Zend Developer Zone continues their great series of tips today with the latest - #14 - a tip concerning the consideration of the overall security of your application (there's a mouthful).

Almost any application running PHP on the back-end uses web technologies for it's front end. Many developers who think hard on PHP security, don't spend a thought on front-end security for their application.

The specific example they give is a frontend issue, a Javascript cookie. Ensure that any data you put inside a cookie is safe. No matter what, do not put anything sensitive in its contents.