I just installed the Better WP Security plugin on two separate sites I am working on. Both sites have since sent out multiple emails stating there have been multiple file changes made - but I do not know what this means or how to tell if this is because of a hacker.
Here are some examples of the file change warnings:
wp-content/plugins/business-directory-plugin/languages/WPBDM.pot Monday July 2nd, 2012 at 4:21 pm UTC 2d66c7a9fa793a74bb835c5a087abf39
wp-content/plugins/si-contact-form/star.png Monday July 2nd, 2012 at 3:18 pm UTC 6c8273e7a485fb777314ea9d0b5a103b
If I cannot get some insight on what these file changes mean or why they are happening I will discontinue to use this plugin with the assumption it does not work and my sites have been hacked.