I am a software engineer and information security specialist with a background in penetration testing, software defined radio, and protected satellite communications. I’ve co-written a paper on the security of online voting systems, and my Master’s thesis covered the same topic (direct link here).


I author a newsletter containing information security news and analysis, with emails sent roughly weekly. Past emails can be found here.

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Contact me

The easiest way to get in touch is via Twitter.

I can also be reached by email: mark [at] markeldo [dot] com