Unverified50% confidenceFactTime unknown
现代反爬虫系统已从早期的User-Agent检测和IP频率限制，演进为基于浏览器指纹、行为分析和机器学习的综合防护
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026
Sources
Related Claims
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