<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.<div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">S pozdravem,<br><b>Filip Skokan</b></div></div><br></div></div><br><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">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">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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