Mozilla Web browsers are potentially more vulnerable to attack than Microsoft’s Internet Explorer, according to a Symantec report,
says CNET News in the article Symantec: Mozilla browsers more vulnerable than IE | CNET News.com.
But I think this is the kicker: There is one caveat: Symantec counts only those security flaws that have been confirmed by the vendor. According to security monitoring company Secunia, there are 19 security issues that Microsoft still has to deal with for Internet Explorer, while there are only three for Firefox.
So, while there may *have been* more flaws, if one is fully patched and up to date, I read this as there are fewer *active* flaws in Mozilla browsers.