Edward Snowden’s leaking of National Security Agency documents appears to have come after a major change of heart on the issue of government whistleblowers. In online chat logs from 2009 released by Ars Technica this week, someone using Snowden’s screen name criticized the disclosure of classified government information, saying those who do so “should be shot.” The criticism came in response to a New York Times article based on leaked information about U.S. cyber-attacks on Iran.