Co-Founder (Acquired by BICS)
TeleSign
Jan 2006 - Apr 2018 (12 years 4 months)
TeleSign is a Communications Platform as a Service company, founded on security, based in Los Angeles, California. Founded in 2005 by Darren Berkovitz, Ryan Disraeli and Stacy Stubblefield, the company mainly provides Two-factor authentication services.
TeleSign was acquired by BICS in 2017
http://www.latimes.com/business/technology/la-fi-tn-telesign-acqusition-bics-20170425-story.html
https://www.socaltech.com/telesign_acquisition_by_bics_closes_deal_value_rises_to_33_m/s-0072559.html