I am a Developer Advocate for Security in Mobile Apps and APIs at approov.io.
Another passion is the Elixir programming language that was designed to be concurrent, distributed and fault tolerant.
Location
Scotland
Education
Self teached Developer
Work
Developer Advocate for Mobile and API Security at approov.io
You mean Firefox ESR? Would not recommend, switch to Chrome instead if you want good advice.
Also we have discuss it here.
The article is focused on the Tor Browser, but discuss mainly security holes in Firefox ESR (on which is TB based).
I only use the normal release of Firefox in Ubuntu.
Currently Firefox Quantum 63.0.3