Ultimately, this is a placeholder solution so that more time can be spent on fingerprinting and identifying headless browsers (EG: via how they do font rendering) so that the challenge proof of work page doesn't need to be presented to users that are much more likely to be legitimate.
* 时间O(n) 空间O(n)（理论最优，无冗余计算）
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system, including cash withdrawals. In fact, since a customer withdrawing cash
我是一名软件工程师，大半辈子都在给软件加密，防止盗版。我的世界由代码和逻辑构成，我相信任何漏洞都可以通过设置一道“防火墙”来解决。直到今年夏天，我发现自己错了。我构建的技术防线，在电诈分子精心设置的圈套面前，是那么不堪一击。