Thank you for your suggestion.
I installed Wordfence and the hits actually came from Facebook !!!!!
Browser: FacebookExternalHit version 1.1
facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)
Strange, isn’t it ?
Wordfence did not detect any threats from my other plugins though.
It worked again !!!! there is something strange about this plugin and I don’t know what it is.
I found it 🙂
For those who look for the solution, it’s table II/B/6
Thank you to the owner of this great plug 🙂
