Company profile
Whisper Security
Internet-infrastructure threat intelligence plus network-side XDR: its graph of 47B+ internet objects (DNS, BGP routing, certificates, registrations, 150+ threat feeds) tells you who really sits behind an address.
- Status
- PrivateListed on CyberMerge Startup Radar (private vendors), snapshot Oct 28, 2026
- Valuation
- Undisclosed
- Latest funding
- Undisclosed
- HQ
- Amsterdam / Netherlands (Startup Radar)
- Last updated
Categories
Funding & valuation
Funding: Undisclosed — no round recorded in the CyberMerge Funding Tracker.
Latest signals
- Startup Radar · Threat Detection · snapshot Oct 28, 2026 28 Oct 2026: launched Whisper Graph XDR, available now with a free tier (5 identities). Policies can target owners, countries, bulletproof hosts, Tor exits, sanctioned networks and newly registered domains, run in monitor mode first, and revoke an identity even when the host stops responding; an optional host sensor adds ransomware, process-injection and Sigma detections held for analyst approval (EIN Presswire). Founded Jan 2025 by ex-RIPE NCC CIO Kaveh Ranjbar and Soroush Rafiee Rad; EUR 1.6M pre-seed; valuation Undisclosed. Source
Competitors
Same-category peers from CyberMerge Research maps, Startup Radar and What's The Use tags.
- CriblPrivateSecurity telemetry / data engine used as the detection data plane (still private).
- IslandPrivateEnterprise browser plus AI Protect: prompts, tool calls, Island MCP Gateway — agentic control plane for…
- Abstract SecurityPrivateStreaming-first agentic SIEM: a security data pipeline normalizes and enriches events with identity,…
- AnvilogicPrivateAgentic detection engineering and Detection-as-Code across SIEM and data lakes.
- ThreatBookPrivateChina-origin NDR / threat detection platform; Gartner NDR Niche Player (2025 MQ).
- HuntersPrivateSecurity data/SIEM platform purpose-built for detection engineering and SOC workflows.
- Query.AIPrivateFederated search across security data stores for investigation and hunting (no-copy).
- Reach SecurityPrivateSecurity-control posture: reads the live configuration of the security tools a company already owns, shows…
- Stellar CyberPrivateOpen XDR / AI-native SecOps unifying SIEM, NDR, ITDR, and response (MSSP-oriented).
- 7AIPrivateSwarming AI agents that investigate and respond in the SOC; federated SIEM.
- CynetPrivateAll-in-one XDR/NGAV/EDR plus automated response for lean teams.
- Dropzone AIPrivateAutonomous AI SOC analyst agents for alert investigation and hunting.
Figures appear only as recorded in CyberMerge data, with source and date. “Undisclosed” means no published figure in our data. Editorial, not investment advice. Last updated . Spot an error? Tell the desk.