] Cisco Systems has created a more efficient and targeted
] way for police and intelligence agencies to eavesdrop on
] people whose Internet service provider uses their
] company's routers.
]
] The company recently published a proposal that describes
] how it plans to embed "lawful interception" capability
] into its products. Among the highlights: Eavesdropping
] "must be undetectable," and multiple police agencies
] conducting simultaneous wiretaps must not learn of one
] another. If an Internet provider uses encryption to
] preserve its customers' privacy and has access to the
] encryption keys, it must turn over the intercepted
] communications to police in a descrambled form.

Inside Cisco's eavesdropping apparatus | CNET News.com