Transmit Security

Transmit Security is an identity security platform company founded in 2014 and headquartered in Tel Aviv with operations in Boston. The company has developed Mosaic, an enterprise-grade platform that fuses customer identity and access management (CIAM) with real-time fraud prevention powered by predictive AI. The core differentiation is unified handling of identity assurance, passwordless authentication, adaptive risk scoring, identity verification, and account takeover prevention in a single API-driven platform, rather than requiring customers to integrate multiple point solutions. This architecture addresses a critical gap in enterprise identity stacks where CIAM platforms and fraud detection systems have traditionally operated in silos.

The market opportunity is substantial. Digital identity is now the front line of business risk for enterprises in financial services, fintech, travel, telecommunications, e-commerce, and government digital transformation. Account takeover (ATO) fraud and identity abuse cost organizations billions annually, with the average attack leading to both immediate fraud losses and long-term customer attrition. Traditional approaches—legacy authentication systems, disconnected fraud detection, rules-based access controls—fail against modern attacks orchestrated through bots, compromised credentials, and AI-powered impersonation. Transmit Security's platform positions itself to replace piecemeal solutions with an integrated system that detects emerging threats through behavioral signals and machine-learning models trained on continuous real-time attack telemetry.

Transmit Security raised $543 million in a single Series A funding round in 2021—one of the largest private rounds in the identity security category at the time—from prominent venture investors and strategic backers. The company remains privately held. The funding and valuation suggest market confidence in the scale potential of a unified identity security platform, particularly given the regulatory momentum around strong authentication (PSD2 in Europe, CCPA/state privacy laws in the U.S.) and the rise of passwordless standards (WebAuthn/FIDO2). The company has built a considerable engineering organization (201-500 employees) and operates production deployments with major consumer-facing and financial services customers, indicating credible market traction and product-market fit signals in critical verticals.

From a dual-use and national-security perspective, identity assurance and account protection are foundational to critical infrastructure and government digital systems. Government agencies, law enforcement, defense organizations, and critical infrastructure operators require resilient authentication and fraud detection systems that can withstand sophisticated state-actor threats, maintain availability under attack, and support secure interoperability across agencies. The same AI-driven behavioral anomaly detection and real-time risk scoring that protects enterprise customers from fraud is applicable to government systems requiring high-assurance access controls, secure citizen digital identity platforms, and protection of sensitive networks. Transmit Security's technology stack—predictive AI, real-time telemetry, API-driven orchestration—is technically aligned with defense and national-security requirements for resilience, auditability, and adaptive threat response.