Siren
Siren provides a search-based investigative intelligence platform for law enforcement, national security, and financial crime investigators. Built on Elasticsearch with patented relational join technology, it enables cross-source data analysis for fraud, cyber threat, and criminal investigations.
- Company typePrivate
- Founded2011
- HeadquartersGalway, Ireland
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What Siren does
Siren, legally Sindice Ltd. and headquartered in Galway, Ireland, provides an Investigative Intelligence Platform built on Elasticsearch that enables investigators in national security, law enforcement, fraud and compliance, and cyber threat functions to search, correlate, and visualize connections across disparate data sources without requiring ETL. The platform is anchored by Siren Investigate™, a search and graph analytics interface, and Siren Federate™, an Elasticsearch plugin that adds proprietary relational join and federated query capabilities across SQL (Oracle, SQL Server, PostgreSQL, MySQL), Impala, Spark SQL, Presto, and Dremio data sources. A patented Aggregate Relations technology underpins distributed cross-index joins with near-linear scalability and approximately 90% hardware efficiency. The third product, K9 AI Companion, launched in September 2025, layers conversational graph analysis, automated investigative workflows, and explainable AI onto the platform.
Siren operates a subscription-based enterprise licensing model with quote-based pricing, annual billing cadence, and a vetted trial access process for qualified organizations. Distribution combines direct enterprise field sales with strategic channel partnerships: a decade-long co-distribution relationship with Elastic (NYSE: ESTC), a CarahSoft reseller arrangement for US government procurement, and integrations with 15+ third-party data providers including Moody's, Chainalysis, Dow Jones, LexisNexis, ESRI, DarkOwl, SpyCloud, and Shadow Dragon. Customers include national security and law enforcement agencies globally, a Top 20 European bank, a major Western national cyber monitoring service, and enterprises such as Apollo.io (B2B sales intelligence) and life sciences organizations. The company maintains offices in Ireland, the United States, New Zealand, Italy, and France.
Siren was founded in 2011 by semantic technology researchers Dr. Giovanni Tummarello and Dr. Renaud Delbru from Ireland's DERI institute in partnership with MIT, originally as Siren Solutions before rebranding to Siren in 2017. The company has raised disclosed funding across multiple rounds from Atlantic Bridge, Frontline Ventures, Enterprise Ireland, DVI Equity Partners, Growing Capital, and the European Investment Bank (€12M in February 2023), with a strategic investment from Elastic announced December 2025. The firm employs 51-100 staff and is led by CEO John Randles with CMO Rachel Kavanagh appointed to drive expansion.
Siren firmographics
Firmographics- Name
- Siren
- Legal name
- Sindice Ltd.
- Website
- https://siren.io
- Company type
- Private
- Founded year
- 2011
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Siren provides a search-based investigative intelligence platform for law enforcement, national security, and financial crime investigators. Built on Elasticsearch with patented relational join technology, it enables cross-source data analysis for fraud, cyber threat, and criminal investigations.
- Ownership category
- akta.pro rank
Siren industry classification
Industry- Product category
- Investigative Intelligence Software
- NAICS
- Security Systems Services (56162), Computer Systems Design and Related Services (54151)
- SIC
- Communications Services, Nec (4899)
- akta.pro primary industry
- Identity Threat Detection & Response (ITDR) (HDAEAJAH)
Keywords
Where Siren is headquartered
LocationHeadquarters
- HQ city
- Galway
- HQ country
- Ireland
- HQ region
- Europe
Offices5 records
Markets served
Siren business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Platform Subscription Licensing: Siren offers its investigative intelligence platform via subscription licensing to government agencies, law enforcement, and enterprise organizations. Revenue generated primarily from subscriptions with enterprise agreements.
- Software Downloads and Licenses: The company distributes Siren Federate plugin and platform licenses through software downloads, with technical trials and evaluation options available for qualified organizations.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Enterprise platform subscription for government and corporate clients |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Siren product offering
Product offeringCore offering
Siren provides an Investigative Intelligence Platform that enables investigators to search, correlate, and visualize connections across multiple structured and unstructured data sources without requiring ETL or data migration. Its core products include Siren Investigate™ (the main investigation interface with dashboards, knowledge graph, and link analysis) and Siren Federate™ (an Elasticsearch plugin enabling relational joins across distributed data sources), augmented by the K9 AI Companion for conversational graph analysis and automated investigative workflows. The platform serves national security, law enforcement, fraud and compliance, and cyber threat teams in government agencies and enterprises.
Product overview
Siren offers a modular investigative intelligence platform centered on two core products: Siren Investigate™ as the main investigation interface and Siren Federate™ as the underlying Elasticsearch plugin enabling relational joins and federation. The platform is augmented by K9 AI Companion, an AI assistant launched in 2025 that adds conversational graph analysis and automated investigative workflows. Siren integrates with multiple third-party data sources (DarkOwl, Chainalysis, LexisNexis, Dow Jones, and others) to provide comprehensive investigative capabilities across national security, law enforcement, fraud compliance, and cyber threat use cases.
Differentiator
Problem solved
Functional benefit
Products and services
- Siren Investigate Search-based investigative intelligence platform that lets investigators search, analyze, and visualize connections across multiple structured and unstructured data sources. Provides relational navigation, graph analytics, knowledge graph dashboards, and real-time data correlation for national security, law enforcement, and fraud investigations.
- Siren Federate Elasticsearch plugin that adds relational join technology to existing Elasticsearch clusters. Enables cross-index joins, federated queries across JDBC data sources (Oracle, SQL Server, PostgreSQL, MySQL, Impala, Spark SQL, Presto, Dremio), and distributed in-cluster join computation for big data scale.
- K9 AI Companion AI-powered investigative assistant launched September 2025 featuring conversational graph analysis, automated investigative workflows, and explainable AI. Designed for law enforcement agencies and commercial investigations to accelerate threat detection and case resolution.
Quantifiable outcome
- 92% of investigators are frustrated by time-consuming manual methods of intelligence research
- +4 more outcomes
Companies that use Siren
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles5 records
Siren technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration15 records
AI capability6 records
Feature7 records
Siren partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core and minor.
- ElasticcoreStrategic investment and decade-long partnership combining Elastic's real-time search and anomaly detection capabilities with Siren's patented investigative intelligence technology. Collaboration enhances K9 AI Companion for security and law enforcement agencies worldwide, improving case resolution and cross-agency cooperation.
- SayariminorStrategic partnership to expose financial crime by combining Siren's investigative platform with Sayari's commercial risk intelligence and graph analytics capabilities.
- CarahSoftminorReseller partnership for US government sector providing access to Siren's investigative intelligence platform through CarahSoft's government procurement channel.
Scale indicators5 records
Recent moves7 records
Expansion highlights7 records
Siren competitors and assessment
Company assessmentDirect peers
- Babel Street: Babel Street offers an OSINT and cross-border analytics platform used by law enforcement, national security, and commercial clients. It overlaps directly with Siren's Public Safety, National Security, and Fraud & Compliance use cases.
- Magnet Forensics: Magnet Forensics is a leading digital forensics vendor for law enforcement and enterprises, recently partnered with Siren at Fusion 2026. It addresses adjacent parts of the digital evidence workflow, making it a complementary and partially overlapping peer.
- Dataminr: Dataminr delivers real-time event and risk detection from public data sources for corporate security, public sector, and news organizations. Its alerting and entity-resolution capabilities overlap with Siren's investigative intelligence use cases.
- Exiger: Exiger provides AI-driven supply chain, financial crime, and regulatory risk analytics, often deployed at government and large enterprise levels. Its DDIQ platform competes with Siren in financial crime and compliance investigations.
- Recorded Future: Recorded Future (acquired by Mastercard) is a threat intelligence platform serving security teams, governments, and financial institutions. Its intelligence analytics and integrations overlap with Siren's Cyber Threat and Fraud & Compliance segments.
- Chainalysis: Chainalysis is the dominant blockchain analytics platform used by law enforcement, regulators, and financial institutions. It is integrated with Siren via partnership but also competes for budget in the financial crime investigation workflow.
- Maltego: Maltego is a widely used OSINT and link-analysis tool among investigators, law enforcement, and cyber threat analysts. It competes with Siren Investigate's graph analytics and entity resolution capabilities for the same analyst persona.
- Palantir Technologies: Palantir Gotham and Foundry provide investigative intelligence platforms for defense, intelligence, law enforcement, and financial crime customers. It is the most direct competitor to Siren in the government/intelligence investigative analytics space and competes for the same large federal contracts.
Broad incumbents
- Databricks: Databricks provides a unified data and AI platform increasingly used for entity resolution, graph analytics, and security data lakes. It does not specialize in investigative intelligence like Siren but competes for the underlying data platform budget in large enterprises.
- IBM i2 Analyst's Notebook: IBM i2 is a long-standing link-analysis and investigative tool used by law enforcement, defense, and intelligence agencies worldwide. It competes with Siren's graph and entity-resolution capabilities as part of IBM's broader security software portfolio.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Siren social profiles
Digital presenceSiren financial estimates
Financial estimateRevenue estimate
Valuation estimate
Siren leadership team
Management profileNumber of profiles
Profiles13 records
Siren funding detail
Funding detailFunding overview
Funding rounds5 records
Investors8 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Siren M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Siren
What does Siren do?
Siren provides an Investigative Intelligence Platform that enables investigators to search, correlate, and visualize connections across multiple structured and unstructured data sources without requiring ETL or data migration. Its core products include Siren Investigate™ (the main investigation interface with dashboards, knowledge graph, and link analysis) and Siren Federate™ (an Elasticsearch plugin enabling relational joins across distributed data sources), augmented by the K9 AI Companion for conversational graph analysis and automated investigative workflows. The platform serves national security, law enforcement, fraud and compliance, and cyber threat teams in government agencies and enterprises.
Is Siren a public or private company?
Siren is a private company. It is classified as venture growth investor backed and is currently operating.
When was Siren founded?
Siren was founded in 2011. It employs 51 to 100 people.
Where is Siren based?
Siren is headquartered in Galway, Ireland, in the Europe region.
How does Siren make money?
Two revenue lines are on record. Platform Subscription Licensing is the primary driver. The others are software Downloads and Licenses.
Who are Siren's main competitors?
Direct peers on record are Babel Street, Magnet Forensics, Dataminr, Exiger, Recorded Future, Chainalysis, Maltego and Palantir Technologies. Broad incumbents are Databricks and IBM i2 Analyst's Notebook.
Does Siren have an API?
Yes. Siren exposes a public API. Developer documentation is at docs.siren.io.
What industry is Siren in?
Siren's product category is Investigative Intelligence Software. Its primary akta.pro industry code is HDAEAJAH, Identity Threat Detection & Response (ITDR). Its NAICS code is 56162 and its SIC code is 4899.