How Ed Snowden Taught Me to Smuggle Secrets Past Danger (2014)

What’s interesting is that even Edward Snowden made a mistake in his PGP emailing procedures, resulting in Micah Lee needing to make a plaintext request to Snowden for his pubic key, which might have allowed a MitM substitution of a compromised key to Laura, if the threat actor had intercepted and deduced the communication early.

https://archive.ph/UPIvi