Newly disclosed, <A HREF="http://news.zdnet.com/2100-1009_22-6065048.html?tag=zdnn.alert">unpatched flaws in three browsers</A> could make the Web a more dangerous place to surf, security experts have warned. Security researchers published details on the bugs in Microsoft's Internet Explorer, Apple Computer's Safari and Mozilla's Firefox to security mailing lists over the weekend. The Firefox and Safari bugs could cause the browsers to crash, while the IE hole could be exploited to hijack a vulnerable Windows computer, Secunia said in advisories on its Web site.