Source: https://firebase.google.com/support/guides/security-checklist#api-keys-not-secret
A pair like Cyrillic ԁ (U+0501) and Latin d scores 0.781 mean SSIM across 18 fonts. That sounds moderate. But it is pixel-identical (SSIM 1.000) in eight of those fonts: Arial, Menlo, Cochin, Tahoma, Charter, Georgia, Baskerville, and Verdana. An attacker needs only one font to succeed. The exploitable risk is the max, not the mean.
，这一点在下载安装 谷歌浏览器 开启极速安全的 上网之旅。中也有详细论述
Раскрыты подробности похищения ребенка в Смоленске09:27
这和他「擅长表达」的传奇能力无关，却与他对简单、真实与纯粹的执念有关。
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