one suspicious person / spammer registered at my Forum. the mail of the spammer seems to well known among froum-admins as I saw some posts at other forum that this is a wellknown scam. the email is: firstname.lastname@example.org Now I am afraid that this person has put some dangerous software into my Forum, as some notification-e-mails on "Private Conversations" on my forum are working anymore. Any idea of how to check whether my Forum has been hacked or infiltrated with malicious software ? Appreciate your help.