Cybersecurity expert and CBS News contributor Chris Krebs and intelligence and national security reporter Olivia Gazis joined “Face the Nation with Margaret Brennan” to discuss the alleged hacking of the Trump campaign, as some media organizations reported obtaining what appeared to be sensitive internal campaign documents . The campaign blamed Iran, and it urges reporters not to publish anything received as a result of the hack. Krebs said the apparent hack appears to be a “replication of the Russian playbook in 2016,” when the Democratic National Committee was infiltrated by Russian actors.