Re: [csswg-drafts] [css-color-4][css-color-adjust-1] Shielding system colors to avoid fingerprinting? (#5710)

I'm providing a privacy review of this draft.

The information leakage in the forced-color property is quite concerning. As the feature is specified, the privacy and security risk is not only fingerprinting, but it is potentially revealing information about a user's health/physical condition. I understand the significant benefits in providing a mechanism for adjusting sites to meet the needs of the user, however it seems the current design allows a web page to abuse this information, too. I recommend considering options (2) or (3). Alternatively, the "correctness" of the response from getComputedStyle seems like functionality that could be gated behind a permission prompt.

Separately, regarding the color-scheme, I recommend limiting the addition of new schemes in the future.

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Received on Thursday, 21 January 2021 03:35:24 UTC