For those who don't remember, Russinovich prior to taking over his boss' job and possible succession as the next MSFT CEO, he owned a software tools and NT kernel consulting company where Redmond sent their engineers to learn NT kernel dev. Also, he found Sony's DRM rootkit, Symantec's rootkit-like file protection, and caught Best Buy pirating ERD Commander.
I'm kind of kicking myself now that I nuked my LinkedIn in 2014 having 2 degrees from the whole Valley and Mark as 1st. Oh well, there's freedom and agility in relative obscurity. What's that reggae song by Desmond Dekker about it's pointless to talk about how much you did, made, or who you used to know? xD