U.S. Senator Ron Wyden has asked Director of National Intelligence John Ratcliffe to explain what steps he is taking to improve the cybersecurity of some of the nation's most most sensitive secrets, held by federal intelligence agencies, after Wyden obtained a "damning" CIA report on cybersecurity failures that led to “the largest data loss in CIA history" after a CIA employee stole "at least 180 gigabytes" of information and then provided that to WikiLeaks. 

The White House ordered tighter security to prevent leaks like the release of more than 250,000 State Department cables. Sunday's release of documents obtained by the whistleblower website WikiLeaks exposed the inner workings of U.S. diplomacy, including candid assessments of world leaders and disclosures on issues such as Iran's nuclear and missile programs.