ISACA® is a worldwide organization of information governance, control, security and audit professionals.  It was previously known as the Information Systems Audit and Control Association®, but now only goes by the acronym ISACA.  This organization creates the COBIT® standards and manages 2 professional certifications:

• Certified Information Systems Auditor (CISA®)
• Certified Information Security Manager (CISM®) 

This organization also publishes the Information Systems Control Journal.

For more information, see their web site at http://www.isaca.org/.