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Ask HN: Refusing all cookies, still targeted by ads. How?

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Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#91

You need tracker blocking extensions, and/or a "degoogled" version of Chrome like Thorium or Brave. My usual loadout is Thorium + the EFF's Privacy Badger extension, and sometimes UBO.

Extensions are blocked for "security and privacy concerns", and our internal systems don't work well with non standard browsers for some reason

Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#93
post #54

Earlier quoted context omitted.

GPRD doesn't target just cookies, but tracking in general, which must be known and consented. So basically what OP says is that most sites are just not following the European laws.

Thank you! I find people repeating the "GDPR is stupid because there are other ways to track than using cookies" thing all the time and it's so frustrating. Misinformed comments like that usually end up at the very top of discussions like this.

It's hard to convince someone when their livelihood depends on not understanding.

Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#95

In addition to the non-cookie fingerprinting mentioned by others that can happen, there is a loophole in the GDPR cookie control legislation that allows "legitimate interest" cookies to continue to be placed and tracked when you click Reject All. You have to edit your cookie preferences for the site (assuming they provide the option) and deselect Legitimate Interest cookies proactively in order to block them. This re…

This is wrong. Cookies are covered by ePrivacy, article 5(3), not GDPR. There are two regimes for cookies: strictly necessary ones, and others, requiring consent. The fact that disabling “legitimate interest” cookies does not break the service should tell you that they are not strictly necessary. GDPR enters the picture when cookies are used to identify users. And using the “legitimate interest” basis for ad purposes…

Thank you for the correction!

Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#96
post #69

Earlier quoted context omitted.

The ePrivacy Directive (collaqually Cookie Law) doesn’t actual specify only cookies. Section 66 of https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL... just talks about third parties storing information on equipment: Third parties may wish to store information on the equipment of a user, or gain access to information already stored, for a number of purposes, ranging from the legitimate (such as certain typ…

That sounds like it applies to cookies and local storage, not all tracking. It doesn't sound like it applies to IP-based or device fingerprint-based tracking.

It's two different directives:

- ePrivacy Directive which is about local storage

- GDPR which is about information processing

Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#97
post #14

Cookies was a simple concept that politicians could glom on to and legislate around, but, yes, they're quite unimportant in the grand scale of things. In the end, you've got two things to work with: Things you can convince the browser to actively identify itself with, and the things you can track regardless. Cookies are in the first category, but they are not alone. You can get things as simple as presenting an entir…

Looking through that site, one of the things used to identify you is the value of the "do not track" header...

So the existence of that header actually makes tracking worse on the web

Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#98
post #55
post #12

Fingerprinting. Everything about you that isn't identical to everyone else can be combined to guess who you likely are. Your exact browser version, OS, supported APIs, your IP address, your latency to Google servers... Anything that isn't a complete match to everyone else. You may have a new install, but your IP and latency match your old install. What are the odds you're not the same person? It's all probabilistic.…

But that's also a form of tracking. Are you saying it's a form of tracking which is exempt under the GDPR? Do you have a source on that?

It's not exempt but advertisers do it anyway.

Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#99

Earlier quoted context omitted.

I’m pretty skeptical of this of this fingerprint test. I’m on a 5G connection, in a major city with a completely default current gen iPhone, and it seems to think I’m 100% unique. Which I don’t believe for a second.

There's only 1.9 million samples in their database, and to be fair, the people who go to that site to test their fingerprint, are probably the kind of user who is going to have a unique fingerprint, notsomuch a common user. So a common user going there is likely a bit unique.

Im in Firefox and it tells me 43% of the fingerprints are Firefox.

So seems very skewed!

Re: Ask HN: Refusing all cookies, still targeted by ads. How?

#100
post #43

Earlier quoted context omitted.

The important bit is that the cookies not only are irrelevant from the point of view of allowing tracking to occur technically, they're also irrelevant from a legal point of view. A company must have your consent to hold and process your information for a specific purpose , regardless of whether or not that is done using cookies or fingerprinting. If you have been presented with a consent popup and have not consented…

This is a critical thing that so many miss. If somebody has a website that doesn't use any cookies, but does send a POST request to www.bigcompanyanalytics.com/send-user-info with a body containing user-identifying information, then that is still illegal if the user has not consented to analytics (if they are in an area that requires opt-in for analytics). Cookies aren't really mentioned in GDPR or other privacy laws…

How does that work given that web servers have request logs that capture some identifying info? You already know some things about the user before you can even serve them the consent popup.
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