Ad targeters are exploiting browsers’ built-in login managers to covertly collect hashes of users’ email addresses, to be used to track them across the web. “Email addresses are unique and persistent, and thus the hash of an email address is an excellent tracking identifier,” Princeton University’s Center for Information Technology researchers explain. “A user’s email address will almost never change — clearing cookies, using private browsing mode, or switching devices won’t prevent tracking. The hash … More
This post was originally published on https://www.helpnetsecurity.com/.