There’s been a lot of discussion lately (again) on the need for encrypted Email or Messaging, and the pros and cons of various services, from WhatsApp to Telegram, from RCS to SMS.
I am not fully on the post-privacy bandwagon, but for sure people are aware that by using a third party service for Email or Messaging their messages can be read, aren’t they? We don’t call root super-user for no reason.
In the last century the Network Working Group wrote in RFC 1855 “Netiquette Guidelines”
2.1.1 For mail:
Unless you are using an encryption device (hardware or software), you should assume that mail on the Internet is not secure. Never put in a mail message anything you would not put on a postcard.
That’s today as true as it was then – unless you own both sides of the encryption, don’t send anything through the Aether that you don’t want other people to see!