Internet Explorer vs. Firefox. vs. Safari vs. Opera Judging strictly by the sheer volume of vulnerabilities Mozilla Firefox was the most insecure browser in 2007, according to Symantec. Firefox had a total of 122 security holes, more than any other rival browser. Symantec credited the efforts poured into securing Internet Explorer 7 for IE managing to be situated under Firefox in terms of security flaws. Internet Explorer, Firefox, Opera and Safari are together synonymous with the browser market, having divided the vast majority of the Internet audience among them. In addition to the constant race for an increased install base, the four browsers are also continually evolving toward new standards of performance, compatibility and security. In this regard, Symantec has published a report offering an insight on in Public bookmarkswith browserfirefoxieinternetoperasafarisecurityweb Note: Browser Wars : Internet Explorer vs. Firefox. vs. Safari vs. Opera