Portrait of Ryan Castellucci in 16 bit era ā€˜pixel art’ style. Long brown hair, light skin, androgynous features, smiling slightly.

Bio

I’m a professional computer security researcher with an extensive background in Linux systems administration, computer networking, applied cryptography, and programming. Since childhood, I’ve enjoyed taking things apart and learning how they really work. Deep understanding allows me to push the boundaries of what is possible. Originally from California, I now live in London.

If you’re writing about me or my work, please use gender-neutral language to refer to me. I use they/them pronouns and prefer not to use a title, though ā€œMxā€ is acceptable where one is required.

My family name is pronounced ā€œkas-teh-LOO-cheeā€.

Publications

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