DarkSail offers JA4+ device fingerprinting, enabling security teams to uniquely identify and profile devices based on their network traffic patterns. The service integrates with existing monitoring tools to provide granular visibility for threat detection, incident response, and network compliance.
Funding
Funding not disclosed
Founders
Product
Problem
Organizations struggle to reliably distinguish legitimate client devices from malicious actors because traditional network logs lack granular identifiers for TLS connections. This makes threat detection, fraud prevention, and comprehensive visibility across diverse applications difficult.
Solution
DarkSail provides a JA4+ device fingerprinting service that extracts detailed characteristics from the TLS handshake to generate unique identifiers for each client device. By analyzing cipher suites, extensions, and other handshake parameters, the platform creates reproducible fingerprints that can be correlated across sessions and environments. These fingerprints enable security teams to profile device behavior, detect anomalies, and block fraudulent activity without relying on IP addresses or user agents. DarkSail integrates with existing security information and event management (SIEM) and threat intelligence platforms, allowing automated enrichment of logs with fingerprint data for real‑time monitoring and incident response.
Target Audience
Primary customers are security operations centers, fraud detection teams, and network administrators in enterprises and service providers that need precise device identification for threat analytics.
Features
- JA4+ algorithm implementation that captures full TLS handshake metadata for high‑entropy device fingerprints
- Real‑time fingerprint generation and lookup via API for seamless integration with security tooling
- Cross‑session and cross‑network correlation to track devices despite IP changes or VPN usage
- Enrichment of logs and alerts with fingerprint tags to improve detection accuracy
- Compatibility with major SIEM, IDS/IPS, and cloud security platforms through standard REST endpoints