Problema sicurezza wordpress

Ciao a tutti!
Mi chiamo Nicola Bindi e sono nuovo nuovo sia qui nel forum che nell’utilizzo di wordpress
Da solo 2 giorni ho aperto il mio blog e oggi pomeriggio ho ricevuto un messaggio da parte del plugin WORDFENCE
Questo è il testo del messaggio che mi è arrivato:

This email was sent from your website “TheFreshSide” by the Wordfence plugin at Monday 29th of February 2016 at 04:21:37 PM
The Wordfence administrative URL for this site is: http://thefreshside.com/wp-admin/admin.php?page=Wordfence

A user with username “TheFreshSide12” who has administrator access signed in to your WordPress site.
User IP: 87.1.120.4
User hostname: host4-120-dynamic.1-87-r.retail.telecomitalia.it
User location: Bagno a Ripoli, Italy

NOTE: You are using the free version of Wordfence. Upgrade to Premium today for less than $5 per month!
– Advanced features like IP reputation monitoring, country blocking, an advanced comment spam filter and cell phone sign-in give you the best protection available
– Remote, frequent and scheduled scans
– Access to Premium Support
– Discounts of up to 90% for multiyear and multi-license purchases

Click here to upgrade to Wordfence Premium:
https://www.wordfence.com/zz1/wordfence-signup/

—
To change your alert options for Wordfence, visit:
http://thefreshside.com/wp-admin/admin.php?page=WordfenceSecOpt
To see current Wordfence alerts, visit:
http://thefreshside.com/wp-admin/admin.php?page=Wordfence
Sinceramente non so come comportarmi, qualcuno può aiutarmi?
grazie a tutti in anticipo