Microsoft has updated Internet Explorer to version 5.1.6 and 5.2.2, for Mac OS 8.1/9 and Mac OS X respectively. The new builds of Internet Explorer fix security shortcomings and other issues.
Internet Explorer 5.1.6, intended specifically for Mac OS 8.1 through Mac OS 9.x, resolves security vulnerabilities present in previous versions. Problems that could cause IE 5.1 to stop responding or cause a memory problem that compromised the security of the computer have also been resolved, according to Microsoft.
Internet Explorer 5.2.2 is the latest version available for Mac OS X. As with Internet Explorer 5.1.6, the update resolves a security vulnerability associated with the validation of digital certificate chains. That problem could, under certain circumstances, cause identity spoofing, according to technical documentation provided by Microsoft.
Both versions are available for download from Microsoft's Mactopia Web site at http://www.microsoft.com/mac.