Jester Sluggo is a Phrack author or contributor since Phrack Volume 1 Issue 6. He is an old schooler from the mid 80s and has written some tutorials about Hacking Unix boxes.
Alumni of the Fraternal Order of the Legion of Doom (Lambda Omega Delta)
https://en.wikipedia.org/wiki/Legion_of_Doom_(hacking)
http://phrack.org/author_Jester%20Sluggo.html