Tag Archives: verizon

An Update on Verizon’s UIDH Injection

In October last year, I posted a summary of phone carriers injecting unique identifiers into outgoing http requests made by customers. From the perspective of privacy, the main problem with this scheme is that it provides a way for third parties such as advertising networks to uniquely identify their users without using cookies.

Recent developments show that this threat is not merely theoretical. John Mayer recently discovered Continue reading An Update on Verizon’s UIDH Injection