Startup · Netherlands
Whisper Security
HQ Amsterdam, NetherlandsFounded 20251-10 employeesUpdated
WhisperGraph joins DNS, BGP, WHOIS, hosting, data centres and threat feeds into one graph of the internet.
Funding2 rounds · ~$2.0M
- Equity raised
- ~$2.0M
- Latest
- ~$1.9MPre-Seed · Jul 15, 2025
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Jul 15, 2025 | Pre-Seed | ~$1.9M | — | — | — | Reported |
| Dec 24, 2024 | Pre-Seed | ~$105K | — | — | — | Reported |
- Pre-Seed~$1.9MJul 15, 2025
- Pre-Seed~$105KDec 24, 2024
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems5
- WhalenetPrivate networking component within Whisper Graph XDR for connecting servers and agents.
- WhisperGraphQueryable internet infrastructure graph used by Whisper Security’s intelligence and security software.
- Whisper Graph XDRSoftware for machine identity, network connection monitoring and access policy enforcement.
- Whisper GuardBrowser extension that checks website names against Whisper Security’s infrastructure graph.
- Whisper IntelligenceSoftware for investigating internet addresses and infrastructure using source-linked intelligence.
Newest unveiled first. Systems that belong to a government program link to the program page, where variants, costs and contracts are.
Capabilities1
| Technology | Role | Maturity | TRL | Notes | Confidence |
|---|---|---|---|---|---|
| Information management and cybersecurity | Developer | — | — | classify_sectors run 37, haiku, taxonomy 2026-10-18b: Internet threat-intelligence graph for identifying IP and domain operators; cybersecurity technology with no stated defense or government customer. | Reported |
- Developerclassify_sectors run 37, haiku, taxonomy 2026-10-18b: Internet threat-intelligence graph for identifying IP and domain operators; cybersecurity technology with no stated defense or government customer.—Reported
Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.
People3
| Person | Role |
|---|---|
| Kaveh Ranjbar | CEO & Co-Founder |
| Soroush Rad | CPO/CIO & Co-Founder |
| Roman Viliavin | COO |
Sources6
Profile1
- 1
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "Netherlands", "hq_iso2": "NL", "id": "e3efc21c-4a9a-4f52-9a58-f2db80adae1d"}”
Systems4
- 2
Whisper Security · Supports Organization · description, Organization · name, Organization · website, System
“WhisperGraph joins DNS, BGP, WHOIS, hosting, data centres and threat feeds into one graph of the internet. Ask who runs any IP or domain, via API or MCP.”
- 3
Whisper Security · Supports System
“- ### Private mesh Whalenet connects your servers and agents to each other over their public identities, with rules that can check the graph.”
- 4
Whisper Security · Supports System
“Browsers | Whisper Guard, from the Chrome Web Store and Firefox Add-ons. | Checks every site's name”
- 5
Whisper Security · Supports System
“Whisper Intelligence # Ask who is behind any address.Get the answer with its evidence. One query crosses routing, DNS, hosting, ownership, email, certificates and threat intelligence. The verdict comes back with its sources, their weights and the sum.”
Funding1
- 6DatabaseWhisper company profile
Octen Business Search · Supports Funding round, Organization · employee range, Organization · founded year, Organization · hq city, Organization · hq region, Organization · linkedin url, Role
“funding round: Pre Seed Round, 2024-12-24, EUR 100,000”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.