Building the Next Wave of Cloud Security
Two years after coming out of stealth, Upwind has become the unicorn that solves cloud security better than anyone else.
Today, we are raising $250M in our Series B funding round, bringing total investment in Upwind to over $430M. This makes Upwind one of the most capitalized companies in the world focused on solving the cloud security problem for the next, at least, 20 years. It is a big day for us, becoming the first unicorn in modern cloud security. However, it is still a small milestone in our future journey. We are excited, while staying laser focused on execution.
Thank You
Before anything else, I want to thank our amazing customers for believing in us. You trusted us early. You challenged us. You pushed us to be better. You let us learn alongside you in environments that are complex, fast-moving, and unforgiving. Everything we build is grounded in the reality you live every day, and this company exists because of that trust. This Series B belongs to you more than it belongs to us.
To the Upwind family, thank you for working day in and day out, listening carefully to customers, and competing with the biggest cybersecurity companies in the world without hesitation. This team works relentlessly for our customers, not just during launches or milestones, but every day. In every support ticket. In every small issue. We care deeply about quality, clarity, and doing the work the hard way when it matters. Thank you for showing up with urgency, humility, and an unwavering commitment to solving real customer problems.
The Early Days
When I think about our beginning, Upwind is truly a story of friendships, commitment to building, and fast convictions. Omri Casspi and I were on a family trip to San Diego when I told him about the idea to start a company. That weekend, Omri connected me with Gili Raanan at Cyberstarts, who took 45 minutes to make a decision. That same weekend, we met with Saam Motamedi at Greylock, Gideon Hayden from Leaders Fund, Bryant Barr at Penny Jar, and of course Stephen Curry. From there, we were off to the races.
The same thing happened in our Series A with Mike Robinson and David Sacks from Craft, and again in this Series B with Elliott Robinson, Sameer Dholakia, and Alex Yuditski from Bessemer.
The Cyberstarts and Greylock approach to seed companies is very simple: provide high-quality access to technical leaders in the industry at scale. This allows founders to share their perspective and get fast, meaningful feedback. Gili operationalized this approach. It is methodical and built around small iterations, with daily check-ins after every meeting to discuss feedback and improve the direction, the idea, the approach, and how we think about solving the problem.
We continue with this humble approach today as we enter a new wave of growth with Bessemer Venture Partners and Picture Capital. We still have a lot to learn and a lot to achieve.
I want to sincerely thank our investors for believing in this vision and supporting us as we build for the long term. Your support has allowed us to stay focused on building the right thing, not the easy thing.
The Mission
It was clear to us that we were not trying to incrementally improve cloud security. We were responding to a real shift in reality.
Cloud infrastructure was becoming more complex at a pace security teams could not slow down. Data volumes were exploding. AI was accelerating both innovation and risk. Yet many of the security models designed to protect these environments were built for a much simpler time.
From day one, we believed cloud security needed to be built for continuous change, not static moments. For real-world complexity, not simplified assumptions. For the future that was clearly coming, not the past we were trying to preserve.
That belief has shaped every decision we have made at Upwind.
Scaling our Speed
This Series B is meaningful because it validates what our customers have been telling us all along: cloud, data, and AI have fundamentally changed the security problem, and addressing this new reality requires a different approach.
This funding allows us to scale our speed and double down on what is already working. To invest deeper in the platform. To support more customers navigating increasingly complex environments. And to continue building with discipline and focus.
We are committed to the speed that brought us here, and to expanding our cloud security platform across AI, data, code, and whatever comes next.
We are focused on helping security teams operate with confidence in a world that does not slow down.
This Series B is fuel. And we are just getting started.
Up and Up and Up!
Amiram.
P.S. Want to hear more about the journey? I sat down with our CSO, Rinki Sethi, to talk candidly about what this Series B means, how we got here, and what’s next. Watch the conversation below.
Hear What’s Next, Straight From Us
Want to hear what this funding really means for the future of cloud security? We’d love to share it with you, directly.
Our founding and executive team is opening up 1:1 time to chat with anyone who’s curious about what’s next for Upwind, and how we’re building the next generation of runtime-powered cloud security.
Whether you’re a CISO, security leader, investor, or curious builder, drop your info below and we’ll personally reach out to schedule time.
