This image was sent from the server to your browser with a cookie containing an ID. If the request to the image already contained an ID, it's reused as is. If not, a new random one is generated.
By putting this image's URL on several pages of different websites, it is possible to log each visited pages for a given visitor.
<img src="//cookies.rocks/cookie.svg">
Here is a list of the pages you visited that use this tracking image:
| Date | Page URL |
|---|