After that, I co-founded travel search company ITA Software with Jeremy Wertheimer and Carl de Marcken; this company powers Kayak, Orbitz, and many airline websites. Google bought ITA Software in 2010 (closed Apr 2011) for ~$700M, and the system is now known as Google Flights.
INKY, my most recent startup, pioneered new techniques in email security. Kaseya acquired INKY in October 2025.