WHAT IS USER ISOLATION IN HOSTING AND WHY IS IT IMPORTANT FOR SECURITY?

User isolation is a method of configuring the operating system and web server on hosting where each individual account or website runs in an isolated software environment with strict limitations on access rights to the file system and system resources. Without such isolation on standard shared hosting, all neighboring websites run under the same system user, which creates serious security threats to the entire server infrastructure.

The main danger of a lack of isolation is that if at least one website on a shared server is hacked or has a vulnerability, the attacker gains full access to the files of all other projects hosted there. They can easily read configuration files with database passwords of neighbors, inject malicious code, or disrupt the operation of other people's resources.

Modern hosting providers solve this problem using various environment segregation technologies.

When choosing a hosting provider, you should always clarify how account isolation is implemented, as this directly affects the security of your websites against external threats originating from neighboring server tenants.