Opera Software has called on its fellow browser makers and the Internet community as a whole to band together in an effort to fix the security issues related to Internationalized Domain Names. The IDN standard was called into question earlier this month following news that it could lead to domain spoofing and phishing attacks. The problem with IDN stems from its use of the Unicode character set to enable domain names that include international letters. But because the DNS system that facilitates the Internet only understands ASCII, or U.S. English characters, Unicode URLs must be converted by a Web browser into a format called "Punycode."