Same same here. I have gor several warnings from different sites running Wordfence.
None of them seems to be correct....
Mostly is is language files like this:
wp-content/languages/admin-zh_CN.po (the file is the original WP file dated 24/4, so there has been NO changes...)
Would love to see a Wordfence technician explaining what we are experiencing at the moment. I, like the guys above, are convinced that this is a 'false positive' and the result of a mistake.
Wordfence-people please verify!
:-) Mads