A vulnerability that could allow Web addresses to be spoofed has been fixed in an updated version of the Firefox browser The Mozilla Foundation released an update to the Firefox Web browser on Thursday to fix several vulnerabilities, including one that would allow domain spoofing.

The open-source project released Firefox 1.0.1 to fix a vulnerability in the Internationalized Domain Names (IDN), a standard for handling special character sets in domain names that could let an attacker spoof Web sites on non-Microsoft browsers. The standard allows companies to register domain names that appear to be the same in different languages.

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