It seems a very bad period for the software that we're using here, phpBB from http://phpbb.com.
http://phpbb.com was recently attacked by :
[i:cc048f48fa]"a group of hackers/crackers who (based on available information apparently corroborated by said hackers/crackers) used an exploit in awstats to gain entry."[/i:cc048f48fa]
Now the situation is confused because they don't know exactly how they gained access to the site. phpBB recently had a lot of attacks by hackers/crackers who succeded in modify the files using some codes in the text of the message.
They also use google in a way that I'm not able to fully understand, and infact in the last period we had a lot of guests connected to the site and the sytem says that they are bots from search engines...
I'm backing up the site on a regular basis, but something could happen... I hope no, but in the worst case I will have to change the software to a different one even if I phpBB because it's a free software made in open source...
Anyway, just to prevent strange things, I'll restrict the access to the site only to registered members and close the possibility to view the site to guest users.
I'll "reopen" the site when I'll know more about the situation. Actually you can see what's happening on http://phpbb.com
Personally I upgraded the site to the last security patches