Digital watermarking techniques can be used for purposes such as label, authentication, control and dada hiding etc, by embedding a secret imperceptible signal directly into the data to be protected.

数字水印技术通过向被保护的多媒体数据中加入透明的秘密信息，来达到标识、鉴别、控制或隐藏信息等作用。

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If businesses want an ultra-secure network, he notes, they should use encryption, authentication and access control.

FORBES: Magazine Article

The suite of APIs allows developers to seamlessly integrate with Polycom RealPresence video solutions such as provisioning, scheduling, directory services, user management, conference control, authentication, and billing.

FORBES: The Changing Face Of Video At Polycom

Discovered and submitted to the agency this past Monday, the exploit unearthed by Smith takes advantage of an "SNMP backdoor" : an internet protocol that allows for remote network administrative control without authentication.

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