The Cisco Intersight platform uses a layered security architecture that builds on industry-standard security technologies. It also encrypts data, complies with strict Cisco security and data handling standards, and separates management and IT production network traffic for additional isolation. As a result, you can have confidence that your cloud-based systems management platform offers the strong security you require.
For more information, please see the Cisco Intersight Security Brief.
There is also a video overview at Cisco Intersight: Security and the Cloud - YouTube , or you can watch the more detailed discussion on security practices used in development of Intersight.