Mark Klein, AT&T Whistleblower Who Exposed NSA’s Mass Surveillance, Dies Mark Klein NSA Privacy & Security Uncategorized Mark Klein, AT&T Whistleblower Who Exposed NSA’s Mass Surveillance, Dies admin March 13, 2025 Before Edward Snowden, Mark Klein blew the whistle on NSA internet spying. Read More Read more about Mark Klein, AT&T Whistleblower Who Exposed NSA’s Mass Surveillance, Dies
