Twitter Developers reported a problem, which affected those users who used the platform through the Firefox browser. It turned out that the files that were received using personal Twitter messages, as well as data archive files that can be downloaded from the profile, were saved in the browser cache. Moreover, they persisted even after the person left Twitter and the system.
The company now warns users who share the computer with other people that some of their personal files may remain in the Firefox cache. Other users can view these files, and they can also be stolen by malware present in the system.
Fortunately, the danger of this vulnerability is greatly reduced by the fact that Firefox automatically deletes all cached data older than seven days.
“If you use or used a public or shared computer to access Twitter, we recommend that you clear your browser’s cache before logging out and be more careful with personal information that you upload to a computer used by other people,” the developers write.
Currently, the error has already been fixed, now personal user files will not settle in a freely accessible cache.