Brian Long

Founder & CEO

Co-founder and CEO of Adaptive Security. Serial entrepreneur who co-founded TapCommerce (acquired by Twitter for ~$100M in 2014) and Attentive (grew to $500M+ annual revenue, $7B valuation, raised ~$900M from Sequoia).

Overview

Companies
1
Roles
Founder & CEO

Companies

1 company
Adaptive Security $147M
Private Founder & CEO

AI-native cybersecurity platform that protects organizations from AI-powered social engineering attacks. Simulates deepfake voice calls, AI-generated phishing emails, and SMS-based attacks to train employees and assess vulnerability. Serves 500+ enterprise customers including PayPal, Xerox, and Bose. Founded by serial entrepreneurs behind TapCommerce (acquired by Twitter) and Attentive ($7B valuation).

Founder data is compiled from company records, public announcements, and verified sources. Roles reflect current or most recent known positions.