Using obsolete applications or templates and plug-ins for them, or using very simple passwords always poses a threat to your websites because these things make it significantly easier hack them. Things can get worse when you have a few different sites because all of them will be vulnerable when an attacker takes over just one of them. This is the reason why we've created JailHost - an advanced security option which isolates websites from each other. If an Internet site is compromised, its attacker will be unable to find or gain access to any other content outside the site folder, so all the other Internet sites in the account will be protected and will remain intact. The JailHost option does not substitute carrying out frequent script updates or using proper passwords, but it'll minimize any damage to your Internet sites significantly, so you will have to fix only one website not all of them.