Harmonic Security

What they do:

Cybersecurity startup Armadin Inc. today announced that it has raised $255.5 million in funding at a valuation exceeding $2.5 billion. Andreessen Horowitz and Accel co-led the Series B round. They were joined by…

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Funding:

$256M · Series B · Oct 2026

What they do:

Pluto Security Inc., a provider of artificial intelligence security software, today announced that it has raised $42 million in funding. The company raised about a fifth of the sum through a seed round led by TLV…

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Funding:

$42M · Series A · Oct 2026

Hadrian

What they do:

Hadrian, an agentic AI offensive securityplatform, has raised $40 million in a funding round co-led by Forgepoint Capital International and Smart Fin. Existing investors HV Capital, Motive Partners, P...

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Funding:

$40M · Oct 2026

What they do:

Baselayer, an AI-powered startup that helps financial institutions verify businesses and assess fraud risk, has raised a $35 million M13-led Series A to expand its identity technology to AI agents.

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Funding:

$35M · Series A · Sep 2026

Rein Security

What they do:

Rein Security Inc. said today it’s trying to help enterprises protect themselves against two distinct security threats relating to agentic artificial intelligence after raising $25 million in early-stage funding from…

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Funding:

$25M · Series A · Oct 2026

Fleuret AI

What they do:

Fleuret AI, a Paris-based cybersecurity startup automating penetration testing with agentic AI, has closed a €4 million pre-Seed round to hire AI, software engineering, and offensive security talent and accelerate…

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HQ: France

Funding:

€4M · Pre-seed · Oct 2026