Since 2006, when I for the first time "saw the light" with Joomla! I have fortunately not been exposed to more than a few hacker attacks of my websites. In both cases there was only a so-called de-faceing, but still it was frustrating to be hacked and time consuming, in the first case, to get the website up and running again. Luckily, I had learned when the next attack was inevitable. I had a backup.