Remember when you downloaded Firefox circa 2004 because Internet Explorer was inundating Windows XP with viruses? Those days have long since passed, and according to a Google-funded study carried out by Accuvant, Firefox is now among the least secure web browsers. Naturally, Chrome is the best.
Obviously this has to be approached with a fair amount of skepticism, Forbes points to Accuvant's industry cred for objective reports on security. This particular report calls out Firefox's inability to sandbox code in the browser, thus preventing hackers and malicious code from gaining access to the rest of someone's operating system.
"Accuvant's researchers argue that Google's ability to start from scratch in creating Chrome allowed the company to incorporate new security features that were tougher to integrate into Firefox's legacy code base. "Mozilla's products were around before browser security was such a relevant issue," says Accuvant researcher Chris Valasek. "Chrome was just born at the correct time in the correct environment."
Internet Explorer, which has been bashed for years as being a security cesspool was actually found to compete quite well against Chrome as far as security goes, though it wasn't found to be better. Also curious about this report: where's Safari? [Forbes]