I was using the WiFi at the Bangalore or Mumbai airport one day when I realised that half of the websites appeared broken in some way. I looked into the code and realised that the WiFi provider was injecting JavaScript ad codes in all the web pages I was visiting.
I talked to some people about it, but no one seemed perturbed. Such invasions of privacy are a hallmark of Indian companies. Even more perturbing is the lackadaisical attitude of consumers towards such breaches; most them don't think it's wrong.
On a slightly un-related note: India has a national DND registry, for preventing marketers from spamming users' phones. I have filed over a dozen DND complaints and appeals over the last year, with Airtel and Vodafone, against major e-commerce Indian companies. It's amazing the extent to which these operators would go to suppress the issue. None of my complaints were resolved, and I still get spammed. People tell me - It's just a bunch of messages. Ignore them.