On December 12, 1997, CDT, the Electronic Frontier Foundation, and Computer Professionals for Social Responsibility urged the Federal Communications Commission to find that the FBI is trying improperly to enhance its surveillance capabilities and is overlooking important privacy rights under the digital telephony law (CALEA). The online civil liberties groups urged the Commission to take a more active role in protecting privacy as telephone companies and the FBI struggle to implement the 1994 law. The groups also urged the FCC to ensure that new computerized surveillance features being designed by the carriers to comply with CALEA are protected from misuse by hackers and others. The telephone companies' efforts to comply with CALEA largely involve changes to the software that controls switching within telephone company central offices. To administer wiretaps in the future, carriers will be establishing computerized surveillance functions. These may be networked with other systems administration functions, and with locations outside the particular switching office. This networking, like any other computer networking, creates a vulnerability to hackers and others that could jeopardize the security and privacy of telephone communications. In their comments, the civil liberties groups urged the FCC to ensure the security of these capabilities.