PHP sessions will help because your personal data isn't stored in cookies on your system. Plus it's not a global cookie. Plus it gets deleted when you close the browser window. Plus it's a random alphanumeric string generated each time you login.
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.