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Showing posts from April, 2016

Vodafone India privacy problem: exposes phone numbers

Vodafone India is exposing website surfer/user's phone number to the partner website when using mobile data plan. It might be offering hidden API to those partner websites to uniquely identify users. I have noticed it around 1-year before, thought about blogging, but forgot it at that time. Now, I have got some time and so thought of explaining the issue. How I noticed the issue? Sometime ago, I've bought SanDisk microSD card. In the wrapper, they've mentioned about some offer about hungama (Still available in SanDisk website at The URL mentioned was and when I opened that in my mobile browser, it was prompting with Welcome, 91-98XXXXXXXX.

I was shocked as I never seen anything like that before. So, I immediately opened the same URL in my desktop browser and got completely different page:

And, again I tried to open the same page in mobile browser with Wi-Fi alone (by disabling Mobile Data)…