[webauthn] Merged Pull Request: Mention Intersection Observer v2 in sec considerations

equalsJeffH has just merged equalsJeffH's pull request 1497 for https://github.com/w3c/webauthn:

== Mention Intersection Observer v2 in sec considerations ==
fixes #1105 by describing threat of UI redressing aka clickjacking and pointing to (experimental) https://w3c.github.io/IntersectionObserver/v2/.

note: this PR moves two existing sec cons sections around and inserts a new section -- nothing already existing is removed.


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### :boom: Error: 500 Internal Server Error :boom: ###

[PR Preview](https://github.com/tobie/pr-preview#pr-preview) failed to build. _(Last tried on Oct 21, 2020, 8:49 PM UTC)_.

<details>
<summary>More</summary>


PR Preview relies on a number of web services to run. There seems to be an issue with the following one:

:rotating_light: [CSS Spec Preprocessor](https://api.csswg.org/bikeshed/) - CSS Spec Preprocessor is the web service used to build Bikeshed specs.

:link: [Related URL](https://api.csswg.org/bikeshed/?url=https%3A%2F%2Fraw.githubusercontent.com%2Fw3c%2Fwebauthn%2Fe5dd87b55f5c83588f7534192b5e94a073105950%2Findex.bs&force=1&md-warning=not%20ready)

```
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>500 Internal Server Error</title>
</head><body>
<h1>Internal Server Error</h1>
<p>The server encountered an internal error or
misconfiguration and was unable to complete
your request.</p>
<p>Please contact the server administrator at 
 [no address given] to inform them of the time this error occurred,
 and the actions you performed just before this error.</p>
<p>More information about this error may be available
in the server error log.</p>
<hr>
<address>Apache/2.4.10 (Debian) Server at api.csswg.org Port 443</address>
</body></html>

```

_If you don't have enough information above to solve the error by yourself (or to understand to which web service the error is related to, if any), please [file an issue](https://github.com/tobie/pr-preview/issues/new?title=Error%20not%20surfaced%20properly&body=See%20w3c/webauthn%231497.)._
</details>


See https://github.com/w3c/webauthn/pull/1497


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Received on Wednesday, 28 October 2020 19:11:33 UTC