Currently the [CSS Fonts Level 4 Security and Privacy Considerations section](https://drafts.csswg.org/css-fonts/#priv-sec) has a single sentence: > “The system-ui keyword exposes the operating system’s default system UI font to fingerprinting mechanisms.” This is insufficient. The Security and Privacy Considerations section needs to at a minimum include: * Answers to the Security and Privacy Questionnaire from the W3C TAG: [https://www.w3.org/TR/security-privacy-questionnaire/](https://www.w3.org/TR/security-privacy-questionnaire/) * Explicitly note the fingerprinting dangers as being discussed in [#4497](https://github.com/w3c/csswg-drafts/issues/4497) Labels: css-fonts, css-fonts-4 (Originally published at: https://tantek.com/2020/024/b1/css-fonts-needs-security-privacy)