OpenID is an untrusted protocol. Sun has no liability for what happens to any information you give to a third-party web site using this service. Most OpenID-enabled sites are genuine but some may be phishers or other rogues. Sun currently has no way of distinguishing the good sites from the bad. Do not use the OpenID@Work service for any high-value, critical, or Sun proprietary information.
Link: OpenID at work - Sun