Security News > 2020 > April > If you use Twitter with Firefox in a shared computer account, you may have slightly spilled some private data on that PC

If you used Firefox on a shared PC to, for example, send or receive media in private Twitter messages, or download an archive of your profile that contained non-public information, be aware this data was inadvertently cached on the computer.

Twitter did not specify what exactly caused private data to collect in the browser cache, though it appears a HTTP header was not used as expected, causing Firefox to retain media files and downloaded data for up to seven days.

"We recently learned that the way Mozilla Firefox stores cached data may have resulted in non-public information being inadvertently stored in the browser's cache," Twitter said in an advisory on its website.

"This means that if you accessed Twitter from a shared or public computer via Mozilla Firefox and took actions like downloading your Twitter data archive or sending or receiving media via Direct Message, this information may have been stored in the browser's cache even after you logged out of Twitter."

We made changes to protect your Twitter data if you use Firefox.

News URL

https://go.theregister.co.uk/feed/www.theregister.co.uk/2020/04/02/twitter_firefox_data_bug/