Journalists are constantly having to defend themselves (both offline and, now online), often with people more powerful than they are. Sometimes these opponents are governments themselves. When you’re faced with a threat that can ignore laws, have access to mechanisms and security breaches that other attackers could have, you have to change the way you approach handling sensitive information.
There is no defense against a determined, state-level, actor. You just have to hope they lose interest in you, or you are no longer their primary target. The Eye of Sauron is, however, always watching.