He Sold His Last Company for $400M. Here's His Next Security Bet | Act

What if the future of cloud security isn't about seeing more threats — but stopping them before they ever happen?

In this episode of Notable Perspectives, Oren Yunger sits down with Jonathan Langer, co-founder of Act Security — the cloud security company rethinking cloud defense from the ground up. This isn't Jonathan's first rodeo: he and his co-founders previously built and sold their last company for $400 million, then helped scale the acquirer past $100 million in revenue. Now they're back to the hardest thing in startups — 0 to 1 — betting that the era of dashboards, alerts, and endless findings is over, and that security's next chapter is about action, not visibility.

Join us as we explore:

• Visibility Isn't Enough: Why reports, dashboards, and an endless stream of findings no longer cut it — and what "action-oriented" cloud security actually means when you close the loop instead of just surfacing the problem.
• The Reviewer, Not the Creator: How AI and automation reshape the security professional's job — from hand-writing policies and firewall rules to authorizing and overseeing — and why humans stay in the loop for trust.
• Confidence Boosters: How a second-time founding team earns the trust of large enterprises to let software enforce security automatically — through simulations, rollbacks, and having already been in the trenches.

Chapters

00:00 — A new paradigm for cloud security

01:04 — Why build Act, and why now

02:14 — Beyond visibility: why alerts and findings no longer cut it

03:06 — Back to the future: defense-in-depth for the cloud

03:28 — From visibility to action: closing the loop for CISOs

04:15 — How the security professional's job is changing

05:04 — Automating the mundane, keeping humans in the loop

06:09 — Building trust when software takes action

06:30 — Winning enterprise trust as a young startup

07:38 — The second-time founder advantage

07:59 — Three years out: what success looks like

08:49 — Closing thoughts