What to do when you Website is hacked?

Out of the blue for no rhyme or reason our server was hacked by "someone I won't name for the satisfaction" who defaced a suite of websites who get a trickle of traffic, a hack no one will ever see or mention to anyone.

The key is to move on by restoring your Website and changing your passwords or having your Webmaster do so quickly.   Back to business as usual.

There is nothing you could have done or can do to stop or catch who hacked your site.   I would notify or have your Webmaster notify the system administrator of the attack and make sure the block the IP address of the attack.  They can try to prevent any future attack but not 100%.