Gigi Levy Weiss
@GigiLevy
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@NFX ❤️ working with passionate teams with huge ideas ❤️ even more my wife & 3 kids who think my job is to 'meet people & give them money if I like them’😎
Israel
Joined June 2009
But today, we want to share the larger picture. Why we love the cybersecurity space and takeaways for founders: https://t.co/PQZ5RHWtUG
nfx.com
Startups, not incumbents, are driving the future of cybersecurity as the battleground shifts from OS defenses to the application layer.
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These shifts are great for startups -- if you spot the change early and build something that solves the problem We recently invested in Koi Security because they saw this shift faster than anyone. We wrote about it here:
nfx.com
Koi Security is building the Koi delivers full visibility and control over the self-installed software ecosystem. Here's why we invested:
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For decades, security was about defending the OS perimeter. That assumption is now broken. The new battleground is the application layer: plugins, extensions, AI models, code packages.
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In cybersecurity, every major software shift creates new threats, and every new threat creates opportunities for startups.
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The cybersecurity battleground has shifted. Legacy tools defend the OS. But the risk today lives in the app layer...code packages, plugins, extensions, AI models etc. Koi Security saw this change before almost anyone else. They just raised a $48M Series A. Why we invested ↓
nfx.com
Koi Security is building the Koi delivers full visibility and control over the self-installed software ecosystem. Here's why we invested:
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It's romantic to think that great products alone lead to big outcomes. Yes, product is critical, but there are many other factors. In AI, understanding pricing is one of them. Great resources from the NFX team on how early stage companies should think about it:
Every major tech wave invents a new pricing model. SaaS → per-seat APIs → usage Mobile → surge AI → ? Founders are now being asked to price not just software, but work itself. It requires new ways of thinking, new playbooks.
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I love @NFX's content around network effects and AI so it was a joy to have Founding Partner @GigiLevy join for a conversation on @InvestNStartups. We talked about network effects, AI agents, content, why first-mover advantages are overrated, and how NFX has built its own brand,
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There are so many reasons I love working with founders in Israel. Their speed, mindset, and vision are truly exceptional. Great piece from Sarai on how our Israeli founders are adapting to the new "speed of AI:" https://t.co/Y2OKgFnZsM
nfx.com
Israeli founders thrive in today’s AI startup landscape by embracing rapid pivots. Learn how their unique mindset, forged in lean environments and IDF training, gives them an edge in scaling faster...
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The NFX Bio team is looking for founders dedicated to solving the biggest problems in women's health. The key opportunities and what they're ready to fund: https://t.co/Klgwi2vzk1
nfx.com
Women's health is a $66B opportunity. Learn why investors ignoring it risk missing massive returns as science, tech & culture align for change.
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Thanks @mikeeisenberg and @aleph for a great conversation - with many hard question (as you would expect from Michael!). We covered a lot and I didn't just talk - I also learned a lot 🙏 https://t.co/mZ5xhSkbNQ
aleph.vc
Gigi Levy-Weiss on How the Israeli Air Force is the Best Model for Running a Company, How Playtika Exploded Overnight by Accident, the Uncomfortable Truths About Working in Gambling, and the Coolest...
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Founders are under pressure to chase short-term signals. These are important, but you need long-term strategy. This essay from @beller and @dmuus breaks down why that’s happening: https://t.co/hmqPAjcLvV
nfx.com
Not all fast-growing startups become category leaders. This essay explores how AI hype, fundraising pressure, and short-term metrics create false-positive incumbents—and what founders can do to build...
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Founders often ask us how to think about moats in the AI era. The answer isn’t one golden tactic. It's all of the above, at the right time. The key is to balance maximum speed + long-term defensibility. This piece lays it out: https://t.co/wCds5Pu6TL
nfx.com
Modern GTM strategies have evolved. Learn how fast-growing startups are building authentic communities to drive growth.
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The economic case for longevity is wider than just healthcare. It can make every aspect of society, healthier, happier, stronger. @omri_drory's case applies to the US, and so many other countries: https://t.co/1zBDJWgVeX
Longevity founders have a beautiful vision for the future. It's a world where people can be healthier, more connected, more productive. It's eye-opening once you see it. @omri_drory shares what longevity can do for America: https://t.co/o4W9a6Z7HB
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מחשבות של ניר ושל שאר החברים במטה ההיי טק על המלחמה באיראן והשיח שהיא גוררת בתקשורת וברשתות. חשוב לקרוא!
במהלך סוף השבוע ניהלנו שיחה ארוכה בקבוצת ההובלה של "מטה ההייטק" על המלחמה מול איראן ועל השיח שהיא מעוררת בתקשורת וברשתות, הנה המחשבות שעלו בין חברי וחברות הקבוצה: בשנים האחרונות הקיטוב בישראל הגיע לשיאים חדשים וכתוצאה ממנו נכנסו חלק מהישראלים ללופ נוראי בו הם שופטים כל אירוע או
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במהלך סוף השבוע ניהלנו שיחה ארוכה בקבוצת ההובלה של "מטה ההייטק" על המלחמה מול איראן ועל השיח שהיא מעוררת בתקשורת וברשתות, הנה המחשבות שעלו בין חברי וחברות הקבוצה: בשנים האחרונות הקיטוב בישראל הגיע לשיאים חדשים וכתוצאה ממנו נכנסו חלק מהישראלים ללופ נוראי בו הם שופטים כל אירוע או
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Speed is the master variable. If you do all the little things right, it adds up to lightning speed. All the best founders have it. The NFX "speed talk" is a classic. Here are the highlights:
Most founders think they’re fast. They're not even close. Mindset is the primary source of friction -- it slows you down. Our famous internal "speed talk" is about how to unlock your mindset. We're not releasing it all, but we're distilling key insights from @JamesCurrier:
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Most founders think they’re fast. They're not even close. Mindset is the primary source of friction -- it slows you down. Our famous internal "speed talk" is about how to unlock your mindset. We're not releasing it all, but we're distilling key insights from @JamesCurrier:
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Voice AI is already happening. We're seeing real traction across use cases. → Replacing labor with AI agents → Using voice as a wedge → Unlocking new data streams from real conversations → Creating emotional, high-retention experiences Join the NFX SF team to meet others
luma.com
Join NFX partners and a top cohort of founders for an insider's view of the Voice AI inflection point and what it means for the future of technology. Late 2024…
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