#31132 closed defect (worksforme)

Cookies or site data was set even though I had the block cookies and site data option selected

Reported by: cypherpunks Owned by: tbb-team
Priority: Medium Milestone:
Component: Applications/Tor Browser Version: Tor: unspecified
Severity: Normal Keywords: cookies site data
Cc: Actual Points:
Parent ID: Points:
Reviewer: Sponsor:


I have been experimenting with Tor to see if it suits my goals and for fun.

TorBrowser is often blocked by Google and directed to the robot check page. I started playing with it to see how to get around the constant requests to fill out long captchas and found that cookies or site data is used so people who change IP addresses still get confronted with the same captcha screen. I then chose the block cookies and site data in the Options>>Privacy and Security screen. This temporarily worked but made it so I couldn't set the page to english.(There may be a workaround in the address bar to set it to english as I remember doing that years ago but it wasn't important enough to me to look up again at that point.) This wasn't a problem for me so I kept experimenting with it in that fashion.

After I restarted tor a few times over a day or two, Google went back to its old behavior of confronting me with a captcha when I was exploring Tor. The "block cookies and site data" option was still selected. The "Manage Data" screen showed no cookies or site data had been saved.

However, I chose "clear data" and told it to delete the cookies and site data anyway. Afterward, Google went back to being in a foreign language and it stopped confronting me with the captcha again.

Somehow Google was able to set and read cookies or site data without it being registered with the manage data box and while "block cookies and site data" was set. It was however able to be cleared like it was.

I am also using firefox at the same time as tor. I know it is possible to correlate data between firefox and tor externally if the searches are similar to deanonymize people but I am just experimenting with it for now and am not concerned with anonymity for my current usage.

Either TorBrowser read firefox data or TorBrowser allowed data to be set when "block cookies and site data" was selected.

In "about:tor", TorBrowser also frequently pops up with a red screen that reads "tor is not working" and I have to restart it to get the purple "Explore. Privately." screen indicating Tor is working properly.

Child Tickets

Change History (2)

comment:1 Changed 16 months ago by cypherpunks

This is purely a coincidence, whether you get a captcha while using Google depends mostly on the exit node, and in your experience you've been lucky a couple of times.

comment:2 Changed 16 months ago by gk

Resolution: worksforme
Status: newclosed

Yes, I think cypherpunks is right here.

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