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…
Rein Security raises $25M to rein in insecure AI agents
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:
Workplace artificial intelligence security startup Harmonic Security Inc. today announced it has raised $50 million in new funding to grow its platform for governing how employees use AI tools. The company’s platform…
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Funding:
$50M · 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
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
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
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…
Latest round: $25M Series A (Oct 2026).
Similar startups: Armadin, Harmonic Security, and Pluto Security.