2018/5/14: screenshot of a Newsweek article about EFAIL (Full PDF)
This article is interesting as it makes the link between the EFAIL disclosure and the emblematic figure of digital rights activist Edward Snowden:
PGP, which is used to scramble the content of sensitive messages and believed to be one of the most secure methods of protecting private email communications, was once used by National Security Agency (NSA) whistleblower Edward Snowden to contact journalists.
It is interesting to note that during his talk at the CCC [https://media.ccc.de/v/35c3-9463-attacking_end-to-end_email_encryption], Sebastian Schinzel explicitly states that the only way to use PGP is to follow Snowden's tutorial published in this video for Laura Poitras. This method was never compromised by EFAIL.