Venture with Grace Tobias Citron, Primary VC Partner on Cyber & AI Infrastructure
Jan 18, 2026
Tobias Citron, a Partner at Primary Venture Partners, specializes in cybersecurity investments and incubating AI startups. He discusses the fragmenting landscape of cybersecurity in the AI era, highlighting the emergence of new threats like deepfakes and AI-driven agents. Tobias also shares insights on pen testing transformed by AI, the evolution of security for robotics, and founder archetypes in cyber. He predicts a rise in agent-driven attacks and increased M&A activity, showcasing how innovation reshapes the startup ecosystem.
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Cyber Is Digital Geopolitics
- Cybersecurity sits at the intersection of infrastructure investing and national-security style problems.
- Tobias Citron explains cyber combines his public-policy interest with infra investing because cyber is digital warfare with real geopolitical stakes.
AI Raises Offense And Defense Simultaneously
- AI both creates new attack surfaces and enables defenders to automate security workflows.
- Tobias highlights an offense/defense dynamic because attackers use AI too, raising sophistication on both sides.
Replace Episodic Pen Tests With Continuous AI
- Automate and continuous-test where manual, episodic processes like pen testing exist today.
- Tobias recommends using AI to lower cost, expand the market, and run continuous penetration testing rather than point-in-time reports.
