In Safari (Version 10.1.1 (10603.2.5)) on OS X Yosemite, in the Preferences… -> Privacy [Manage Website Data…] I have an entry:
jet.com
Databses
If I delete this entry, it disappears, and returns in two seconds or less, even with no other windows open, certainly none open to jet.com
, and even with Cookies and website data set to Always Block. Any ideas how to trace what is re-entering this super-cookie?
Best Answer
You can use a command line utility called
fs_usage
to find out which application is accessing a file.To keep an eye on the files stored for this "jet.com" entry the following command will show all activity on all files that contain "https_jet.com" in the file name or path.
I'd recommend running this command and trying to delete the entry again. You'll be prompted for your password because of the
sudo
command at the beginning, but that's necessary becausefs_usage
needs elevated root permissions. To cancel the command once you think you have enough information hold down CTRL and hit C.For example while running that command and removing the entry using Safari's preference pane I get the following entries, which shows activity from Safari, WebKit, dbfseventsd and fseventsd on these files. If the removal of these files is being prevented or if something is recreating them, I'd expect you to see something that might help you identify the culprit.