The story is new, but it has been around for awhile-- the ACLU had an article on it. I read some other articles on this. The articles are about poor NSA document retention, security, and handling rules and practices which could breach privacy rights, and the concern of the ACLU the danger of unmasked names being circulated. These issues predate still exist today as a general matter. But the specific issues with unmasking of Trump communications picked up when non-citizens were being monitored is not covered except to say we should be sure those names were protected. In an interview on March 19, Nunez said the documents leaked by the two Whitehouse employees at the National Security Counsel and any other information Nunez saw did not contain any evidence of illegal unmasking or any FISA warrants for Trump. He did say he wanted Congress to take a look at the procedures involving unmasking to be sure they are as protective of privacy as they should be.