The standard
is in the name.

Brightmind is an early-stage venture firm for cybersecurity and AI founders who need more than just a check. Built by operators and powered by custom automation, we get in the dirt with founders to turn uncommon insight into durable companies.

See the portfolio Meet the operators
The Brightmind Partners team
$251M
Fund I, purpose-built for the earliest stages
Seed + A
First check in, first phone call after
14+
Cyber and AI companies backed and counting
100%
Operator-built. No tourists, no theater.
What founders say

We stay quiet. They get loud.

"Brightmind is our single most helpful and important investor. They see their investments as a true partnership. There is no detail too small or task too large for them to lean in on. If I started another company, my first call would be to Steve and Brightmind."

Spencer Thompson
Spencer Thompson
Co-Founder & CEO, Origin

"Steve's background as a CISO and successful sales leader makes him feel like an extension of our own team. He understands both the buyer and seller side of cybersecurity, which means he can help shape strategy, create opportunities, and even jump into customer conversations when needed. Having someone like that in your corner is incredibly powerful. Most importantly, they genuinely care about the companies and people they back. That's what makes Brightmind such a unique partner, and why I'm excited to have them with us on this journey."

Ron Arbel
Ron Arbel
Co-Founder & CEO, Aryon

"Stephen provided some of the best technical advice and strategic direction we could have asked for during the early stages of our company."

Assaf Rappaport
Assaf Rappaport
Co-Founder & CEO, Wiz

"Brightmind was founded with some of the best industry leaders in Cyber Security, people who have been in the trenches and done the work, and have built amazing organizations in security before being investors. That's what founders need when they are building a company: real world experience wrapped with a clear vision and understanding of the market, with good human beings who you can count on driving."

Nadir Izrael
Nadir Izrael
Co-Founder & CTO, Armis

"I've worked alongside Stephen on Abnormal's board, so I've seen his judgment up close. He thinks like an operator and an investor at the same time, which is rare. Brightmind is exactly the kind of partner I'd point cybersecurity founders toward."

Evan Reiser
Evan Reiser
Founder & CEO, Abnormal AI
What we stand on

Four pillars. Zero fluff.

01

Blue-Collar Elite

We didn't learn cyber in a boardroom; we learned it on the front lines. Our tools were forged in the fire of real enterprise security. We don't just critique products; we tear them apart, reverse-engineer them, and help you rebuild them.

02

Ride or Die

We don't write a check and throw advice over the fence. If we throw it over the fence, we're jumping over with it. We are the first phone call when you're on top of the world, and the only call you want to make when everything is falling apart.

03

A Compass, Not a GPS

Building a category-defining company is brutal. We know when to pick you up when you're getting crushed, and when to tell you to get off your high horse before the market kicks your teeth in. Coach, engineer, recruiter, or therapist, we adapt.

04

The Standard is the Name

Great founders see the world differently, and they're frequently misunderstood. Our name traces back to a very personal reminder to find the superpower in what others might just call "different." We operate with integrity worthy of that name.

The questions everyone asks.

Founders ask · Why Brightmind?

Because the check comes with operators who actually understand your product, the enterprise buyer, and the crushing pressure of building. We test your product, pull levers in our network, and tell you the hard truth before the market does.

LPs ask · What is the edge?

We win through intense operator pattern recognition, AI-automated market intelligence, and a founder reputation that turns into elite deal access. We scale by building technological leverage into our operating model, extending a small team without bloat.

Everyone asks · Why does this firm exist?

To prove that early-stage venture can be sharper, vastly more technical, and deeply more human than the standard country-club model.

Selected portfolio

Built with uncommon minds.

Artemis

Seed

AI-native SIEM built to kill the noise and catch AI-powered attacks.

New York

Origin

Series A

Pioneering a new standard in endpoint security.

New York

vijil

Series A

Trust infrastructure to make AI agents more resilient.

San Francisco
View all 14 companies