[bwagy]

Fully GDPR compliant, we're looking at behavior rather than personal data. We've been on the front foot there - also why we are advocates of content - win/win without the need for intrusive data usage. More on our site..

And that is the messy part, finding the good from the bad - and is worth solving that issue. That's the wider point, this type of, or framework of problem is going to be more and more prominent.

[luckylion]

Thanks for the reply! Isn't enough data about behavior (scrolling speed, typing speed, mouse movements etc) enough to identify an individual, especially when it's combined with something like Browser version? I'd assume those don't change much across sites, i.e. Alice behaves similarly when reading reviews for a new phone or reading the local news.

Height, weight, hair color and year of birth aren't PII, but if you combine them, you're getting pretty close to identifying individuals, it's a behavioral finger print - and though I have no idea if it holds true in general, I'd assume that there's even a strong transfer across devices (a power user scrolls faster on both mobile and desktop).

Is there a way to really solve it? It seems to me that all you actually can do is up the ante, make it harder to do, but with full browser control, it'll be hard to lock them out. And if I'm looking at the behavior of users on my site, I can probably build pretty good replay users that visit the site you're protecting. I remember the "attack" on IRC channels back in the day where you'd join a bunch of bot users that would then have a conversation that is replayed from another channel (possibly in a different language), so timing, interaction etc looked very real (though they may seem a bit rude for not reacting to other people).

[bwagy]

In some rare cases it might be, i.e. if you had an obscure browser version or browser. But scroll across sessions you wouldn't be able to so in general I'd say no. We've also architected the system such that you can't do that. Clients get end processed data showing how people have consumed content. Further, utilizing things like first party cookies tied to the domain.

We put it through the lens of, what helps clients understand the value of content and if people are actually enjoying it.

In terms of solutions, there is a few - profiling real users, using benchmarks of the outputs to real actions (i.e. people reading content tend to do this after) help a lot. As well as measuring in the first place. A surprising number of people still don't measure adequately.

A soft solution is simplifying the supply chain, keeping it transparent. Accountability drops the further you are from the end customer.

Something I maybe missed in this post, is the cost of this. This is real tangible cost, and we have seen cases over time in the millions of dollars. That's money robbed from creating a free and open internet. Advertising provides a significant subsidy for the eco-system.