WASHINGTON, DC – DECEMBER 05: Federal Communication Commission Commissioner Brendan Carr testifies before the House Energy and Commerce Committee’s Communications and Technology Subcommittee in the Rayburn House Office Building on Capitol Hill December 05, 2019 in Washington, DC. All five of the FCC commissioners testified before the subcommittee, which is tasked with oversight of the commission. (Photo by Chip Somodevilla/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.