But user reports later said that the extension update didn’t fully mitigate the issue which, again, could have led to some users’ info being accidentally leaked and potentially deanonymizing them.
1. Open about:config
3. The “Value” column should show “false”
4. Either: right-click and select “Toggle” such that it is now disabled or double-click on the row and it will be disabled.
This is not the first bug that could have been used to unmask Tor Browser users, with information exposure vulnerabilities being patched in the past by the Tor Project team to block attackers from bypassing the browser’s anonymity features and discover the client’s IP address, their language, or their UI locale.