Please see <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=279099" rel="nofollow">https://bugzilla.mozilla.org/show_bug.cgi?id=279099</a> or this site that looks like apple.com<p><a href="https://www.xn--80ak6aa92e.com/" rel="nofollow">https://www.xn--80ak6aa92e.com/</a><p>regarding homographic or look alike character attacks. As an American only fluent in English I'm enormously more likely to encounter malicious content than content that is useful to me on internationalized domain names.<p>To make this less likely you can set<p>network.IDN_show_punycode true<p>in about:config for firefox or in your profile directory you can create a user.js file and add this line.<p>user_pref("network.IDN_show_punycode", true)