Microsoft blasts Google over Chrome Frame plug-in

Doubles IE's potential security problems, cripples privacy mode, argues exec

Microsoft today warned Internet Explorer (IE) users that they could double their security woes if they installed and used Google Chrome Frame, the plug-in that provides better JavaScript performance and adds support for HTML 5 to Microsoft's browser.

"It's not necessarily that plug-ins aren't or can't be secure, but that running a browser within a browser doubles the potential attack surface in a way that we don't see is particularly helpful," said Amy Bazdukas, Microsoft's general manager for IE.

Bazdukas also said that by running Chrome Frame, Internet Explorer 8 (IE8) users were unwittingly discarding all the private browsing protections that Microsoft built into its newest browser.

"Chrome Frame breaks the privacy model of IE," she claimed. "Users are not going to be able to use IE's privacy features, something that's not made apparent to users. They're essentially circumvented."

Bazdukas also maintained that IE8's browser history deletion feature is crippled by Chrome Frame; users who decide to erase the history may think it's working, but it's not.

In a statement earlier today, Microsoft said using Chrome Frame is not "a risk we would recommend our friends and families take." Bazdukas, however, got more specific.

"We're not saying that there's a specific security vulnerability in Chrome Frame, but the concern that plug-ins in general have had regarding security issues adds a new potential threat when Chrome Frame is used. Users have told us that they're looking for a better and safer browser, and we can't see how [using Chrome Frame] will deliver that."

Released Tuesday, Chrome Frame lets IE utilize the Chrome browser's WebKit rendering engine, as well as its high-performance V8 JavaScript engine. Google pitched the plug-in as a way to instantly improve the performance of the notoriously slow IE , and as a way for Web developers to support standards IE can't handle, including HTML 5.

According to benchmark tests conducted by Computerworld , IE8 with Chrome Frame zips through JavaScript nearly 10 times faster than does IE8 on its own.

The extra speed and HTML 5 support are necessary, said Google, if IE users are to run advanced Web applications such as Google Wave , a collaboration and communications tool that Google launched in May.

Bazdukas tied Google's release of Chrome Frame to its rival's desire to promote Wave, but at the expense of IE. "Chrome Fame is all about supporting the impending release of Google Wave," she argued.

More irritating to Microsoft, though, is that Google is trying to profit from IE's position as the world's leading browser. "Google hasn't been able to make an impact on market share with Chrome," said Bazdukas, "and so they've turned to alternate means. Chrome Frame would look to capitalize on the leadership position that we have."

According to the most recent data from Web metrics company Net Applications, IE accounted for 67% of all browsers used last month, with IE8 holding a 15% share on its own. Google's Chrome, meanwhile, controlled just 3% of the browser market in August.

But Bazdukas declined to say whether Microsoft could, and if so, whether it would, somehow block Chrome Frame from being used with IE. "Our focus now is making sure that users understand the tradeoffs they're making if they use Chrome Frame," she said. "People expect that things like IE8's privacy mode [will] work as advertised."

Bazdukas also countered claims by Google that IE users demand faster JavaScript and want support for protocols such as HTML 5. "HTML 5 is not a completed standard," she noted. "We're working on it very actively, and we see a lot of promise in it. But it's premature to support it."

In the end, Microsoft knows what its users want better than Google, argued Bazdukas. "The many years we've been in the browser business, we've been able to get a lot of feedback from users," she said. "And they've told us that they're looking for security, privacy and reliability. With IE8, we think we've done a great job at delivering those to customers."

The Chrome Frame plug-in works with IE6, IE7 or IE8 on Windows XP or Windows Vista. It's available from Google's site as a free download.

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Gregg Keizer

Computerworld (US)
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