Caller ID spoofing—the act of using commercially-available technology or services to alter the name and telephone number that appear on the called party’s caller ID display—is pervasive. It presents significant risk not only to recipients (of being duped into thinking a call is from someone it is not) but also to the person or business whose name and telephone number the spoofer appropriates. An unknowing recipient of a spoofed call could initiate legal proceedings against a completely innocent person or business whose information has been spoofed, causing that party unwarranted reputational harm. Although federal and state governments have attempted to legislate against illegitimate caller ID spoofing, such legislation has struggled to counteract the problem. Recently, however, legislators at both levels of government have undertaken new efforts to curtail harassing and deceptive use of spoofing.