Do browsers allows pages loaded on one tab to access/intercept/inject data in other tabs?

Posted by jairo on Super User See other posts from Super User or by jairo
Published on 2012-07-06T14:19:02Z Indexed on 2012/07/06 15:18 UTC
Read the original article Hit count: 474

Filed under:

security

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browser

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internet-security

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browser-tabs

I was surprised to hear from this Reuters video that it was possible for a page loaded on one tab to access and/or inject data onto another page loaded on a different tab.

TL;DW (too lazy; didn't watch) The interviewee in the video suggests that when doing online banking, the user exit his browser (thus closing all windows) and start a new browser session with just your banking page/tab open. Allegedly, malicious sites can check if you have your banking site open and inject commands onto those sites.

Can someone confirm and/or deny this claim? Is it only possible even if there is not parent/child relationship between windows/tabs?

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