On April 1, 1984, in net.general, the famous kremvax hoax can be seen as a fake post by the then Sovjet leader K. Chernenko.

Here's the header:

Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 4/1/83 (SU840401); site kremvax.UUCP Path: utzoo!linus!philabs!mcvax!moskvax!kremvax!chernenko From: chernenko@kremvax.UUCP (K. Chernenko) Newsgroups: net.general,eunet.general,net.politics,eunet.politics Subject: USSR on Usenet Message-ID: 0001@kremvax.UUCP Date: Sun, 1-Apr-84 11:02:52 EST Article-I.D.: kremvax.0001 Posted: Sun Apr 1 11:02:52 1984 Date-Received: Tue, 3-Apr-84 19:42:40 EST Organization: MIIA, Moscow Lines: 41 Xref: dummy dummy:1 X-OldUsenet-Modified: added Xref