ascii afilias arabic alphabet backward compatibility chinese character country code top-level domain diacritic domain name system domain name e-mail evgeniy gabrilovich finnish language general atlantic partners german language glyph hebrew alphabet hindi homoglyph homonym hostname icann idn homograph attack internationalized resource identifier internet internet explorer james seng japan network information center john klensin mozilla mozilla firefox nameprep netscape navigator paypal phishing punycode ram mohan request for comments romani language root nameserver sami languages sans-serif slashdot spoofing attack swedish language switzerland thaiurl top-level domain unicode vint cerf web browser windows vista working group yiddish language