Atlas Solutions by Facebook, Inc. (

“ATDMT is a tracking cookie served by Facebook subsidiary Atlas Solutions and used as a third-party cookie by several websites.” – Source

Now you can serve and measure your ads to real people across devices, browsers and publishers. Cross-Everything: Reach and measure real people everywhere, at any time.

Cross every line with Facebook. – Ed.

Ethical design violations

(Learn more about Ethical Design.)

Block rule

Block domain


High: found on 1.2% of surveyed sites (85 instances observed).


About Better

Better is a Safari content blocker for iPhone, iPad, and Mac. It protects you from trackers and malvertising by enforcing the principles of Ethical Design.

Get involved

Improve page | Report issue | Discuss