Analysis: Mozilla/5.0 (Linux; arm_64; Android 10; STK-LX1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.39 YaBrowser/23.9.8.39.00 SA/3 Mobile Safari/537.36

This User-Agent belongs to a real Huawei STK-LX1 (Y9 Prime 2019) smartphone running Android 10 with Yandex Browser (YaBrowser) version 23.9.8.39.00, which uses the Chromium 116 rendering engine.

Parsed Components & Risk Assessment

• Primary Browser: YaBrowser/23.9.8.39.00 (Yandex Browser)
• Base Engine: Chrome/116.0.5845.39 (Chromium 116)
• Operating System: Android 10 (API 29)
• Device: Huawei STK-LX1
• Rendering Engine: AppleWebKit/537.36
• Final Token: Mobile Safari/537.36 (legacy compatibility)

Risk Factors

• Outdated Software (HIGH RISK): Android 10 (released 2019) is 4+ years old and no longer receives security updates. Chromium 116 (Aug 2023) is ~1.5 years behind the current stable version (v.130+ as of Dec 2024).
• No Critical Anomalies: The structure is valid. "arm_64" is a common variation for ARM64 architecture. The "SA/3" token is Yandex's "Smart App" or Search App identifier, not an anomaly.
• Low Bot Probability: The UA string is highly specific (device model, multiple browser tokens), complex, and follows legitimate patterns. Simple bots rarely mimic such detail.
• Known Browser: Yandex Browser is a legitimate Chromium-based browser popular in Eastern Europe.

Version Comparison (as of 2024-12-08)

• Android Stable: Android 14 (15 beta). Android 10 is critically outdated.
• Chrome Stable: ~v.130. Android WebView/system components likely also outdated.
• Security Posture: The device and browser combination has multiple unpatched vulnerabilities.