Yusuf On SecuritySecurity news, opinion and advice

Punycode and the art of phishing

Punycode as described in rfc 3492 “is a simple and efficient transfer encoding syntax designed  for use with Internationalized Domain Names in Applications (IDNA). It uniquely and reversibly transforms a Unicode string into an ASCII string. ASCII characters in the Unicode string are represented literally, and non-ASCII characters are represented by ASCII characters that are allowed in host name labels (letters, digits, and  hyphens).”

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Further reading

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