The test's overall message is positive: uTest uncovered no major security flaw in any of the three browsers covered. "We're very encouraged by it," says spokesperson Matt Johnston. "In years past, we wouldn't have been able to say that."

The community did, however, discover 672 bugs across the browsers -- an average of almost one bug found for every 15 minutes of testing. All were user interface-related functional or technical issues, Johnston says. One bug, for example, caused a newly opened tab to have faulty color properties. Another caused a blip when trying to import favorites from another browser.

"They were general usability and functional things," Johnston explains.

Browser Breakdown

So here's the breakdown, browser-by-browser: