I've done some research that introduced me to some of his more... acceptable writing.

http://homepages.rpi.edu/~bulloj/tjk/tjk1.html

He was eventually caught after he coerced the NYTs into publishing his manifesto and his brother recognized the arguments contained within it.

Not quite stylometric analysis, but I think that's an interesting angle of the story.

a.k.a. "Unabomber" https://en.wikipedia.org/wiki/Ted_Kaczynski

For eighteen years, while living in the woods.