There have been a number of articles where people have gotten their personal data from Facebook or Twitter and shown the shocking level of detail in the data. This article is even more interesting because it is looking at Quantcast and the data it collects.

My Quantcast data, for instance, gives an eerily specific insight into my work life at Privacy International. From my browsing history alone, companies like Quantcast don’t just know that I work on technology, security, and privacy – my news interests reveal what exactly it is that I am working on at any point in time. My Quantcast data even reveals that I have a personal blog on Tumblr.

There are hundreds of firms like this that sit behind every website you visit and track incredible amounts of data on everything you do. I would highlight that every URL can then be mined to generate even more insight into you.

I block Quantcast and tens of thousands of other trackers on every browser I use with 1Blocker. I can’t recommend strongly enough that you should use a tool like 1Blocker. Surfing the web without privacy protection exposes you to incredible levels of surveillance. 🕵️‍♂️