The Halperin Companies: 

Providing management and consulting for network applications and security issues and general crisis management.

Halperin Technical Services:  

Specializing in network design, maintenance and forensics and technology related recruitment.

The Law Offices of Ivan W. Halperin:  

Formerly a business, technology and intellectual property oriented law firm;  Mr. Halperin is retired and does not practice law.

Halperin Financial Group:

A financial and business consulting organization with considerable expertise throughout the world.

Baud Town BBS:  

One of the original multi-line bulletin board services and a Southern California pioneer in the Provision of on-line service, an early milestone on the internet:  www.baudtown.com.

E & S Halperin: 

Properties and interests of the estates and trust of Eugene & Sadella Halperin, managed by The Halperin Companies.