About

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.

My career started at a small ISP, where I did everything from taking help desk calls to systems administration. Progressing through various roles at several companies helped me understand the needs of different parts of IT organizations and how they fit together.

The focus of my work shifted to bot detection and mitigation in 2014 when I joined HUMAN Security (formerly known as White Ops), a startup co-founded by my friend, Dan Kaminsky. I created a lot of their foundational technology and was quickly promoted to Principal Security Researcher. About a year after Dan’s death, I left HUMAN, but I continue to do similar work as a Principal Security Engineer at Amazon.

I have lived in London with my partner since 2019.

Please use gender-neutral language when writing about me. My pronouns are they/them, and further details are available for reference.

My family name is pronounced “kas-teh-LOO-chee”.