DATE: COMMAND SOURCE: AUTHOR: SID SYSTEMS AFFECTED Win NT PROBLEM A unique machine SID is created when machine is installed and never changes. User SID's are extended versions of the machine SID. Generally, an SID from one workstation never finds its way onto another, but this can happen in rare cases and could result in one user getting another's access permissions. To verify this, check out MS Knowledge Base article: Q162001. EXPLOIT SOLUTION This is possible to occur in very rare cases, but no valid fix for now.