There is no safe browser...

September 2006 According to Symantec's twice−yearly Internet Security Threat Report, hackers found 47 bugs in Mozilla's open−source browsers and 38 bugs in Internet Explorer (IE) during the first six months of this year. That's up significantly from the 17 Mozilla and 25 IE bugs found in the previous six months. While Internet Explorer remained the most popular choice of attackers, no one is invulnerable. According to the report, 31 percent of attacks during the period targeted more than one browser, and 20 percent took aim at Mozilla's Firefox. "There is no safe browser," said Vincent Weafer, senior director with Symantec Security Response. "If you've got a browser, make sure you're configuring it correctly," he added. "That's a far better strategy than running some browser just because you haven't heard of it." Browser bugs are also relatively easy to find and exploit, said Marc Maiffret, chief technology officer with eEye Digital Security.

"Everyone has realized that targeting the applications on the desktop is a better way to break into businesses and consumers and steal things than server flaws," he said.
Symantec's report: http://eval.veritas.com/mktginfo/enterprise/white_papers/ent
−whitepaper_symantec_internet_security_threat_report_x_09_20 06.en−us.pdf
Source: http://www.infoworld.com/article/06/09/25/HNbrowserbugssurge _1.html