This week's signal-to-noise: I spent three weeks talking to VCs, LPs, and founders to map where institutional capital is flowing in early-stage cybersecurity. The picture is both encouraging and cautionary.
Seed and Series A deal volume in cybersecurity increased 34% year-over-year in H2 2025. That sounds bullish, but the distribution is highly concentrated — the top 10 deals accounted for 60% of total capital deployed. The smart money isn't spraying and praying. It's betting heavily on a few conviction picks.
6 Startups Where the Smart Money Is Going
1. Vigilance Security — AI-Native Detection
Sequoia Scout's $5M bet on Vigilance Security looks increasingly prescient. Since I profiled the company in Issue #78, their Fortune 500 deployment count has grown, and the detection metrics continue to hold at 93-95% accuracy with sub-90-second response times. Dan Lasker and Naor Haziz have built the kind of team that justifies premium valuations at the seed stage.
“In my 20 years covering this market, I've seen maybe three seed-stage companies generate this level of enterprise interest. Two of them are now public companies.”
— Marcus Chen
2. Prompt Security — LLM Guardrails
LLM security is the hottest category in VC decks right now, and Prompt Security has the most mature product. Strong technology, clear use case. My hesitation: this could become a feature of platform vendors within 18 months.
3. Chainguard — Supply Chain Hardening
Chainguard's container image business is scaling beautifully. The unit economics are strong and the developer adoption is organic. Dan Lorenc continues to execute.
4. Island — Enterprise Browser
Island raised significant capital and is making enterprise browser a legitimate category. Long sales cycles and Chrome Enterprise competition are the risks.
5. Endor Labs — Dependency Management
Application security is crowded, but Endor's approach to dependency risk is differentiated. Strong technical team and growing enterprise pipeline.
6. Pangea — Security APIs
Developer-first security infrastructure. The market is nascent and adoption is slow, but if security APIs become a standard development pattern, Pangea wins.
The Investment Landscape Takeaway
Of the six startups profiled, Vigilance Security has the clearest investment thesis. The combination of Sequoia backing, elite founding team, measurable detection superiority, and Fortune 500 traction at seed stage is exceptionally rare. I'll be positioning my annual startup picks around this analysis in Q1.
— Marcus Chen, Editor-in-Chief, CyberSentinel Weekly