The FCC’s Jessica Rosenworcel testifies during an oversight hearing to examine the Federal Communications Commission on Capitol Hill on June 24, 2020. (Photo by Jonathan Newton/Getty Images)
Federal Communication Commission Commissioner Jessica Rosenworcel testifies before the House Energy and Commerce Committee’s Communications and Technology Subcommittee in the Rayburn House Office Building on Capitol Hill Dec. 5, 2019, in Washington, D.C. (Photo by Chip Somodevilla/Getty Images)
A letter sent to major carriers highlights gaps in a recently implemented set of protocols meant to verify legitimate callers and cut down on spoofing.