Fingerprint

Fingerprint commercialized one of the most widely used browser-fingerprinting techniques — the open-source FingerprintJS library, started in 2012 — into an enterprise device-intelligence signal that now underpins fraud and bot detection across the web. The core product generates a stable, highly accurate visitor identifier that persists even when users clear cookies, use incognito, or switch networks, and the company reports identifying 99.5% of returning users in under 500 milliseconds. That reliability has produced genuine scale: Fingerprint is trusted by over 6,000 companies, including a meaningful slice of the top 500 websites. Its Smart Signals add-on layers VPN/proxy detection, bot activity, browser tampering, and virtual-machine flags on top of the identifier, letting risk teams score sessions with rich context and harden onboarding, login, and checkout without building detection logic themselves. The 2023 $33M Series C led by Nexus Venture Partners took total funding to roughly $77M, and Nexus framed the company as "a modern utility for the internet economy," citing 10x-plus ROI for customers. Strategically, device intelligence is exactly the layer that rises in value as identity fraud industrializes: passwords and even biometrics can be phished or spoofed, but recognizing the physical device behind a session — and flagging when it's evading detection — is a durable, hard-to-fake signal that complements every other identity method. As deepfakes and synthetic identities defeat document and selfie checks, a persistent, high-accuracy device fingerprint becomes a stickier fraud primitive, and Fingerprint owns the most recognized brand and largest install base in that specific niche.