The title should be "TinyURL sets ad tracking cookies" as this is the only one proven to do in this article.
There are tons of URL shorteners, and not all of them do this.
There are tons of URL shorteners, and not all of them do this.
>While neither redirect you to an advertising company like TinyURL, Twitter’s primary business model is advertising, and bit.ly’s privacy policy says they share data with third parties to “…provide advertising products and services…”
Both services set long-lived tracking cookies:
curl -v 'http://bit.ly/aFzVh0'
...
< Location: http://nymag.com/daily/entertainment/2010/08/hear_katy_perrys_milk_milk_lem.html
< Set-Cookie: _bit=l03lLp-b899a3350a02095760-00P; Domain=bit.ly; Expires=Fri, 02 Jul 2021 21:47:25 GMT
curl -v 'https://t.co/45cMiYOHQ8'
...
< location: https://luke.cat/
< set-cookie: muc=6d0d0800-f738-4704-b292-f03b6e5a5f91; Max-Age=63072000; Expires=Tue, 03 Jan 2023 21:49:09 GMT; Domain=t.co; Secure; SameSite=None