Scathing letter sent to US Office of Personnel Management asks for answers about a possible and serious security breach.

An email system used by Elon Musk and his associates to contact all U.S. federal employees operates "entirely on government ...

The email system used by Elon Musk and his team to contact federal employees operates "entirely on government computers" , ...

A growing number of US government websites have gone offline as of Saturday, including several related to USAID and others ...