The pseudo #wikileaks-forum.com website attempts to access canvas image data

Posted by

Using Tor (https://www.torproject.org) the Anonymising browser to access a website yesterday brought about a surprise message:

This Website (www.wikileaks-forum.com) attempted to access image data on a canvas. Since canvas image data can be used to discover information about your computer, blank image data was returned this time.

Then a drop down menu offered me the option to “Allow in the Future or “Never for this site”, which I of course selected. I took a screenshot to share here:

Screen Shot 2014-01-22 at 12.00.07

Why would this happen?

When I googled “canvas image data” I got this article pop up which talks about duckduckgo.com facing similar problem.

https://duck.co/forum/thread/1952/warning-message-when-accessing-duckduckgo-com-usin

They are investigating the issue.

Will the owners and admins of the pseudo wikileaks forum do the same and explain why their website attempts to access canvas image data?