Writing Secure WordPress Plugins
Very interesting to consider that sometimes aplugins sloppy code or even the fact that some plugins could be created with nefarious purposes, an intersting article on things to consider when developing (and I would like to add consider using) a wordpress plugin.
from web tools collection
This article explains the security features built into Wordpress and its plugin framework and discusses the most commonly used items including attribute_escape and wp_nonce and how to use them in your plugins. This is an essential read for plugin developers if you are not building security into your plugins.