[2] In 2012, Sotirov co-founded New York based Trail of Bits[3] with Dino Dai Zovi and Dan Guido, where he currently serves as co-CEO.

In 2008, he presented research at Black Hat showing how to bypass memory protection safeguards in Windows Vista.

Together with a team of industry security researchers and academic cryptographers, he published research on creating a rogue certificate authority by using collisions of the MD5 cryptographic hash function[6] in December 2008.

Sotirov is a founder and organizer of the Pwnie awards, was on the program committee of the 2008 Workshop On Offensive Technologies (WOOT '08),[7] and has served on the Black Hat Review Board since 2011.

[8] He was ranked #6 on Violet Blue's list of The Top 10 Sexy Geeks of 2009.