TBB warns about canvas privacy when visiting whonix blog

[phabricator-migrator]

Information

ID: 683
PHID: PHID-TASK-uaqd577i6nwo3xdc6cgo
Author: JasonJAyalaP
Status at Migration Time: resolved
Priority at Migration Time: Normal

Description

TBB gives a privacy warning concerning canvas. Is this an addon we’re using? What triggers the warning? TBB bug?

Comments

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fortasse

2017-06-03 14:44:26 UTC

From the console log:
Blocked http://kkkkkkkkkk63ava6.onion/blog/ in page http://kkkkkkkkkk63ava6.onion/blog/ from extracting canvas data. http://kkkkkkkkkk63ava6.onion/blog/:51.
Line 51 is related to Wordpress’ emoji-rendering code, which is done with the HTML5 canvas.

Following the advice outlined on Remove Wordpress emoji code in your header without plugin, this prompt no longer appears.

Of course, we no longer have the Wordpress emojis, but that may be a good thing depending on how you feel about them

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Patrick

2017-06-03 15:34:21 UTC

Great!