Unverified50% confidenceFactExact time
谷歌于2014年推出No CAPTCHA，2018年推出reCAPTCHA v3，将验证转向行为特征
1
Sources
50%
Confidence
Long-term
Relevance
7/12/2026
First Seen
Sources
反AI字体：人能读懂、机器识别不了的对抗性设计
hackernewshackernews7/11/2026
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