Use RACF or AFS ACLs to allow multiple user access to files. Sniffers Use hardware encryption. Use software encryption. Install switched port hubs. Password carelessness Educate our community.
Unattended workstations Educate our community.
Educate our community. Encourage routine system-wide password changes. Implement a single sign-on system. Impersonation and forgery Educate our community. Require authentication at workstation.