U.S. Democratic Senator Ron Wyden plans to put a hold on Donald Trump's appointee for the U.S. cybersecurity agency, citing what the Oregon senator called a "multi-year cover up" of serious vulnerabilities in the U.

Ron Wyden has put a hold on the Trump administration’s nomination of Sean Plankey to head the federal government’s top cybersecurity agency, citing a “multi-year cover up” of security flaws at U.S. telecommunication companies.