About
Illumio is a Zero Trust Segmentation and breach-containment cybersecurity company that stops attackers' lateral movement across hybrid and multi-cloud environments; its Illumio Insights product uses an AI security graph for cloud detection and response.
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Founders / team· 3
Comparable companies· by market
This company
BusinessLatest roundTotal raisedDate- Illumio
Illumio is a Zero Trust Segmentation and breach-containment cybersecurity company that stops attackers' lateral movement across hybrid and multi-cloud environments; its Illumio Insights product uses an AI security graph for cloud detection and response.
$558M
$558M
United States
BusinessLatest roundTotal raisedDate- Upwind
Runtime-first cloud and AI security platform
Series C · $750M · 2026-09 · Valuation $3.8B
$750MValuation $3.8B - RAD Security
Cloud-native security: runtime telemetry and eBPF behavioral detection + AI agents VulnBot (posture), CloudBot (detection/response), GRCBot (compliance reporting), Ask RADBot (investigation Q&A), plus AgentKeeper for AI agent governance; for security and compliance teams at enterprises on Kubernetes/cloud-native infrastructure, addressing alert fatigue and false positives with real-time threat detection and automated response.
$6M
$6M - Wiz
Helps enterprises identify security risks in their cloud environments
Series D+ · $1.0B · 2024-05
$1.0B
Europe
BusinessLatest roundTotal raisedDate- Tracebit
Detects, locates and contains intruders by planting decoy data and systems in cloud environments
Series A · $25M · 2026-03
$25M - Maze
Uses AI agents to monitor and remediate cloud security vulnerabilities
Series A · $25M · 2025-06
$25M - Dawnguard
Helps engineering and security teams design secure cloud systems and generate infrastructure code
Pre-Seed · $6M · 2026-07
$6M
Other / unspecified
BusinessLatest roundTotal raisedDate- Act Security
"Action-centric" cloud security platform that systematically removes unused cloud access for employees, workloads and AI agents to shrink the access surface.
Series A · $40M · 2026-07
$40M - Sweet Security
Cloud-native real-time attack detection and blocking
Series B · $75M · 2025-11
$75M - Aryon Security
Enforces security policies at the cloud infrastructure layer to keep vulnerabilities out of production
Series A · $38M · 2026-06
$38M
Confirmed rounds only. Matched on subsector, sector, stage and funding scale — each verifiable on the company profiles.
Investors that may fit
Y Combinator
23 Security & Compliance deals in the last 24 months · 21 in Silicon Valley
Request intro →Andreessen Horowitz
18 Security & Compliance deals in the last 24 months · 16 in Silicon Valley
Request intro →Cyberstarts
18 Security & Compliance deals in the last 24 months · 14 in Silicon Valley
Request intro →Greylock Partners
14 Security & Compliance deals in the last 24 months · 12 in Silicon Valley
Request intro →Ten Eleven Ventures
14 Security & Compliance deals in the last 24 months · 7 in Silicon Valley
Request intro →Ranked by each firm’s deals in this sector over the last 24 months, weighted by nearby stage and shared geography. Indicative only — no rating judgment.