Security consideration: math symbols in an exotic IP address format in a phishing mail

Stephane Bortzmeyer bortzmeyer at
Sun May 17 01:24:09 CDT 2020

On Sun, May 17, 2020 at 01:43:17AM +0200,
 Marius Spix via Unicode <unicode at> wrote 
 a message of 15 lines which said:

> This worked for both Firefox and Chrome.

Also in a terminal with ping, so I suspect this is handled by lower
name resolution libraries.

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