> The assumption indeed is that the user expresses trust on sites
> converted to app tabs; he will check his location and the security UI
> before converting the tab to an app tab.

I am not sure how the app tab UI will work - but if its going to be as
simple as 'right click- make app tab' then I don't think this
assumption is warranted. If there is a pop-up from the browser
'"blahblah.com wants to be an app? Do you trust it?' then maybe I can
buy that assumption.

> We've briefly discussed downgrading the app tab to a regular tab if the
> certificate's security properties change (e.g., EV->DV, or a new cert
> shows up, etc).  We also briefly discussed what would cause the tab
> downgrade to happen (e.g., should we downgrade when the cert changes
> even if it's valid?  This would hose CDNs).

I am not sure if a downgrade would be noticed. Wouldn't a notification
- 'something bad happened' be better?

imho, if cert changes from EV->DV we should downgrade, but a
DV->DV/EV->EV change might not matter much.

thanks
devdatta



On 25 June 2010 12:17, Sid Stamm <[email protected]> wrote:
> This strangeness occurred to me too.
>
> The assumption indeed is that the user expresses trust on sites
> converted to app tabs; he will check his location and the security UI
> before converting the tab to an app tab.  Once it is an app tab, any
> links directing the user off the site will open in a new standard tab,
> so that the user won't be switching top-level document domains in the
> app tab.
>
> There are two other things to consider.  There must be a way to get at
> the security/SSL UI; this will be available when the user clicks the app
> tab's icon. Also, certificate errors should be obvious; the usual
> security warnings will show up if there are cert errors.
>
> We've briefly discussed downgrading the app tab to a regular tab if the
> certificate's security properties change (e.g., EV->DV, or a new cert
> shows up, etc).  We also briefly discussed what would cause the tab
> downgrade to happen (e.g., should we downgrade when the cert changes
> even if it's valid?  This would hose CDNs).
>
> Cheers,
> Sid
>
>
>
> On 6/24/10 11:18 p, Devdatta Akhawe wrote:
>> Hi
>>
>> I was looking at
>> http://blog.mozilla.com/faaborg/2010/06/24/why-tabs-are-on-top-in-firefox-4/
>> and noticed the app tabs feature being talked about. I am concerned
>> about the security implications of app tabs. I can't seem to notice
>> any trusted indicator of my current location while in an app tab
>> (slide over to 2:30 in the video). It seems like this would make app
>> tabs ripe for phishing attacks.
>>
>> Is the assumption that the user will always first check his location
>> and only then convert to app tabs ? What exactly is the model here ?
>>
>>
>> thanks
>> devdatta
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