Hiya!
Awesome plugin :)
Just wanted to let ya know that it incorrectly flags the theme-options.php file in Canvas as a timthumb file. I went through the file and had a look. It contains references to the fact that timthumb is used in the code comments, but no version numbers that I could see.
More of an FYI and notice to anyone else out there - you shouldn't overwrite this file ;)
Thanks again!
http://wordpress.org/extend/plugins/timthumb-vulnerability-scanner/