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<font face="Helvetica, Arial, sans-serif">Interesting. Seems like if
the app is doing something malicious with the webview flows, they
would already be in violation of ToS and hence could have their
client_id revoked. It doesn't seem like a special clause about
"spoofing user-agents" would be required. Thanks for the info!</font><br>
<br>
<div class="moz-cite-prefix">On 3/18/19 5:01 PM, Filip Skokan via
Openid-specs-ab wrote:<br>
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<div dir="ltr">Last I heard from Iain and William (~2 years ago)
is that there's a blacklist of user-agent strings plus a terms
of service agreement that spoofing user-agents is forbidden and
could result in the application's permissions being revoked.
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<div dir="ltr" class="gmail_signature"
data-smartmail="gmail_signature">S pozdravem,<br>
<b>Filip Skokan</b></div>
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<br>
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<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, 18 Mar 2019 at 20:16,
Nat Sakimura via Openid-specs-ab <<a
href="mailto:openid-specs-ab@lists.openid.net"
moz-do-not-send="true">openid-specs-ab@lists.openid.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">Google apparently is banning a request from
WebView so there has to be a way to detect it at least on
Android. Or are they just depending on the user agent header
string which is totally spoofable? </div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">2019年3月19日(火) 2:05 George
Fletcher via Openid-specs-ab <<a
href="mailto:openid-specs-ab@lists.openid.net"
target="_blank" moz-do-not-send="true">openid-specs-ab@lists.openid.net</a>>:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
I'd like to have a discussion around security and
authentication flows <br>
occurring with the system browser vs a webview. I get the
potential <br>
security risk but I don't think we have any guidance on
how an IdP is <br>
supposed to ensure whether requests are coming from the
system browser <br>
vs a webview.<br>
<br>
Thanks,<br>
George<br>
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