Ad-tech arms race continues: DNS system exploited to silently follow folks around the web
Developers working on open-source ad-blocker uBlock Origin have uncovered a mechanism for tracking web browsers around the internet that defies today's blocking techniques.
A method to block this so-called unblockable tracker has been developed by the team, though it only works in Firefox, leaving Chrome and possibly other browsers susceptible. This fix is now available to uBlock Origin users.
The tracker relies on DNS queries to get past browser defenses, so some form of domain-name look-up filtering could thwart this snooping. As far as netizens armed with just their browser and a regular old content-blocker plugin are concerned, this tracker can sneak by unnoticed. It can be potentially used by advertising and analytics networks to fingerprint netizens as they browse through the web, and silently build up profiles of ..
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