In Canada, the government invoked a "national security exception" for hiring firms to build a secure communications network, allowing it to block those seen as a security risk.

BBC: Technology

U. government building that is protected by twenty-four-hour surveillance and a secure communications network.

NEWYORKER: Bring Up the Bodies

Many Facebook customers surely think of Facebook as a communications network, just like their telephone company.

CNN: Facebook needs to earn your trust