[$] Avoiding "supercookie" tracking
The release of Firefox 85
at the end of January brought a new technique for thwarting yet-another
web-tracking scheme. The use of browser cookies for tracking is
well-established and the browser makers have taken steps to block the
worst abuses there, but users can also take steps to manage and clear those
cookies. The arms race continues, however, as tracking companies are using
browser caches to store what Mozilla calls "supercookies", which allow
users to be tracked across the web sites that they visit. That has led the
browser makers to partition these caches by web site in order to prevent
this tracking technique.