texlua-based tool and restricted shell escape

[Jonathan Fine]

Hi

After sending my previous post I did a web search and found
Subject: Don’t take LaTeX files from strangers
https://www.usenix.org/system/files/login/articles/73506-checkoway.pdf

Much to my surprise I found a reference to MathTran, a service I created
over 15 years ago. The article wrote: The one previewer we were unable to
attack, MathTran, uses Secure plain TeX, a reimplementation of plain TeX
that prevents using any control sequence other than those meant for
typesetting.

I'm very pleased to have these words of approval from Checkoway et al.

yours securely

Jonathan
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