Release Notes
Detailed technical notes for every release. Features, fixes, security patches, and performance improvements.
v2.1.3March 15, 2026
Fixes
- TLS fingerprint stability improvement — reduced hash drift for Chrome 134+ by normalizing extension order
- ClickHouse query optimization — materialized view for visitor lookups reduced p99 latency from 120ms to 18ms
- Fixed edge case in canvas fingerprinting where hardware acceleration toggle caused inconsistent hashes
Performance
- Redis connection pool tuning — reduced connection churn by 40% under high concurrency
v2.1.2March 8, 2026
Features
- JA4 hash implementation — replaced legacy JA3 fingerprinting with JA4 for improved granularity and cross-version stability
- Canvas rendering normalization update — new reference scene with improved geometric patterns
Fixes
- Fixed signal collection timeout on low-end Android devices with limited GPU memory
- Corrected WebRTC local IP detection for Firefox 133+ private browsing mode
v2.1.1March 1, 2026
Features
- WebGL parameter expansion — 12 new parameters including MAX_3D_TEXTURE_SIZE, MAX_ARRAY_TEXTURE_LAYERS, and MAX_TRANSFORM_FEEDBACK_BUFFERS
Fixes
- Audio latency fingerprint fix — AudioContext sampleRate normalization for devices reporting non-standard rates
- Fixed race condition in parallel signal collection that could skip font enumeration on first load
Performance
- Client-side collection time reduced by 8ms average through lazy-loading non-critical signal modules
v2.1.0February 20, 2026
Features
- Smart Signals v2 engine — AI-powered analysis model for device matching with 4x improved accuracy on returning visitors
- 200 new signals including CSS feature detection, media codec support, and Intl API parameters
- identification algorithm v3 — separate hardware, software, and session tiers with weighted confidence scoring
- New smart signals: device age estimation, browser modification detection, and privacy tool detection
Performance
- Server-side processing pipeline rewritten — event processing latency reduced from 45ms to 12ms p50
- ClickHouse schema optimization — 30% storage reduction through better column compression
Security
- Upgraded client-server transport to end-to-end encrypted pipeline
v2.0.5February 10, 2026
Security
- XSS prevention in debug endpoint — sanitized all reflected query parameters in the /debug/signals response
- Added Content-Security-Policy headers to all API responses
- Rate limiting tightened on /events endpoint — per-API-key limits reduced from 1000/min to 500/min with burst allowance
Fixes
- Fixed memory leak in WebSocket connection handler for real-time event streaming
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