Donncha's WordPress Exploit Scanner
A plugin for 2.5 and above to check whether your blog has been hit by common exploit methods or not:
This WordPress plugin searches the files on your site for a few known strings sometimes used by hackers, and lists them with code fragments taken from the files. It also makes a few checks of the database, looking at the active_plugins blog option, the comments table, and the posts table.
It’s really good to see how the community responds to the challenges regarding WordPress’s security.
