Jonathan was a professor in the Department of Computer Science at the University of Maryland. He is now a Senior Staff Research Scientist at Google, with a core focus on cryptography and cybersecurity. Jonathan received his BS degree in mathematics and chemistry from MIT in 1996, and, in 2002, completed a PhD in computer science from Columbia University.  He wrote a classic textbook on cryptography, and which is in its 3rd edition. Jonathon also has an online course on Coursera and has given tutorials of various forms on different topics to multiple kinds of audiences.