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[csswg-drafts] [css-conditional-3] Security review answers (#5567)

From: Chris Lilley via GitHub <sysbot+gh@w3.org>
Date: Thu, 01 Oct 2020 09:40:26 +0000
To: public-css-archive@w3.org
Message-ID: <issues.opened-712676444-1601545225-sysbot+gh@w3.org>
svgeesus has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-conditional-3] Security review answers ==
 This issue contains the answers to the [Self-Review Questionnaire: Security and Privacy](https://www.w3.org/TR/security-privacy-questionnaire/) for [CSS Conditional 3](https://drafts.csswg.org/css-conditional-3/)

**2.1 What information might this feature expose to Web sites or other parties, and for what purposes is that exposure necessary?** 

It exposes what CSS features are supported by the browser in use, so that the stylesheet author can only use the ones that are supported. This produces more robust styling, with graceful degradation in older browsers.

**2.2 Is this specification exposing the minimum amount of information necessary to power the feature?** 


**2.3 How does this specification deal with personal information or personally-identifiable information or information derived thereof?** 

Not applicable.

**2.4 How does this specification deal with sensitive information?** 

It does not.

**2.5 Does this specification introduce new state for an origin that persists across browsing sessions?** 


**2.6 What information from the underlying platform, e.g. configuration data, is exposed by this specification to an origin?** 

If the platform means the OS, none. If the platform includes the browser, it exposes which parts of CSS are implemented by a browser.

**2.7 Does this specification allow an origin access to sensors on a user’s device** 


**2.8 What data does this specification expose to an origin? Please also document what data is identical to data exposed by other features, in the same or different contexts.** 

See answer to 2.1

**2.9 Does this specification enable new script execution/loading mechanisms?** 


**2.10 Does this specification allow an origin to access other devices?** 


**2.11 Does this specification allow an origin some measure of control over a user agent’s native UI?** 


**2.12 What temporary identifiers might this this specification create or expose to the web?** 


**2.13 How does this specification distinguish between behavior in first-party and third-party contexts?** 


**2.14 How does this specification work in the context of a user agent’s Private Browsing or "incognito" mode?** 

No differently

**2.15 Does this specification have a "Security Considerations" and "Privacy Considerations" section?** 


**2.16 Does this specification allow downgrading default security characteristics?** 


**2.17 What should this questionnaire have asked?** 

Nothing springs to mind.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/5567 using your GitHub account

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