In case you host multiple Internet sites inside the exact same account and one of them is hacked, it is likely that all of them will be hacked after that. There are various reasons why this could happen, the two most common are: using very weak passwords or using outdated scripts with known vulnerabilities. This way, a single compromised Internet site can do a lot of damage to all your websites, as getting access to a single script often allows hackers to access the entire hosting account. This is the reason why we have introduced a new security option named JailHost. Once activated, this option will literally lock an Internet site within its folder, so if an attacker takes over it, the remaining Internet sites in the account will be hidden. Thus they will be shielded from further intrusion. The JailHost option doesn't suggest that you should not keep your websites up to date, but it will significantly limit the damage.