FingerprintJS, an open-source browser fingerprinting service, raised $32 million in Series B funding led by Craft Ventures with participation from existing investors Nexus Venture Partners and Uncorrelated Ventures.

FingerprintJS helps prevent fraud, spam, and account takeovers with their highly accurate browser fingerprinting service. Their JavaScript technology combines hundreds of signals inside any browser to generate a unique identifier that can be used to detect unusual behavior patterns.