“In the public imagination, reporters working with whistleblowers has traditionally meant All the President’s Men-style cloak-and-dagger stealth — meetings in shadowy underground garages, potted plants turned into signals, Hal Holbrook’s whispered exhortations to 'follow the money,'” writes Joshua Benton for NiemanLab.

However, today’s journalists interact with their sources mostly online.

To help you protect them, Benton listed these 12 Perugia Principles for dealing with confidential sources in the era of digital surveillance and data leaks.

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