Unverified60% confidenceFactExact time
Unicode includes over 140,000 characters, among which the regular right single quotation mark (U+2019), modifier letter apostrophe (U+02BC), and modifier letter right half ring (U+02BE) are nearly indistinguishable to the naked eye in most font renderings, yet differ at the byte level.
2
Sources
60%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
The Claude Code Covert Tagging Scandal: The AI Trust Crisis Behind Alibaba's Ban
bilibili为什么叫QQ7/5/2026
Related Claims
VerifiedAs of its latest version, Unicode has included more than 150,000 characters.77% similarUnverifiedUBA 定义于 Unicode 标准附录 #9，为每个 Unicode 字符分配双向类型71% similarUnverifiedASCII smuggling leverages special characters in the Unicode character set, including zero-width characters, control characters, and Unicode tag characters (in the range U+E0000 to U+E007F).70% similarUnverified文本隐写常见手段包括零宽字符插入、同形异义字替换、语义等价词替换，Claude Code 采用的 Unicode 标点替换是同形字替换技术的轻量变体65% similarUnverifiedA usable Latin font typically needs to cover the basic Latin letters, digits, punctuation, and accented variants, numbering in the hundreds of characters or more.65% similar
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