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From: Jeff-Relf.Me  @.
Message-ID: <Jeff-Relf.Me@Feb.4--11.05pm.Seattle.2019>
References: <cf3f8996-941a-4666-98ce-9a1a911e88e7@googlegroups.com> <p4j8z00g3a.ga3h934@rooftop.invalid> <Jeff-Relf.Me@Feb.2--10.51am.Seattle.2019> <996f3997-bb1f-4cc2-bd7a-b6f60140a3d7@googlegroups.com> <Jeff-Relf.Me@Feb.2--10.57am.Seattle.2019> <q3b9vq$1uoi$1@gioia.aioe.org>
Newsgroups: sci.physics,comp.os.linux.advocacy,alt.checkmate
Subject: ProtonMail.
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Serg_Io asked me:
> thoughts on ProtonMail ?

It's NonStandard.  Security by obscurity.

WikiPedia.ORG says:

  In July 2018, ProtonMail reported it was under 
  renewed DDoS attacks, with CEO Andy Yen stating that 
  the attackers had been paid by an unknown party to 
  launch the attacks. 

  In September 2018, one of the suspected ProtonMail attackers
  was arrested by British law enforcement and charged 
  in connection with a series of other high-profile cyberattacks
  against schools and airlines.