How does Yandex.Direct follow you?

Question

contextual advertising

Good afternoon! Today at work I noticed a strange coincidence. I come, turn on the PC, go to Yandex and see contextual advertising, according to my requests, which I did on the weekend. Namely:
- Buy running shoes.
- Buy a motorcycle.
- Buy a ticket to Montenegro.
The problem is that this is all I googled from my phone at home. On a working PC, there are no authorizations in Google or Yandex, there are no personal sites, etc. The only thing is that I use a working Wi-Fi network. So, can cookies be transmitted over Wi-Fi, and read by Yandex through Nogle Chrome? And if so, how does this happen, and how can it be banned on ios devices?

Answer 1

wonder how it works

bondarew ,
1. Authorization is open on various sites such as Yandex / Google / social networks at home and at work
2. Once 100 years ago they checked mail from a working computer, logged out and forgot about it
3. Any authorization at home and at work on any third-party site /store/forum, which is connected to ya.metrica or google analytics (or you logged in/logged out somewhere 100 years ago and forgot about it)
4. A behavioral factor that large systems have long been able to read and determine. What are you looking for, what are you reading, what are you clicking, etc. If the pattern of behavior on different computers is the same - with some degree of probability it's you again
5. One external IP for the phone and the computer at work, because both devices are connected to the same Wi-Fi, and on the phone you are logged into some site / service / checking mail / checking messages in social networks
6. The combination of all the previous points

Answer 2

Unfortunately, almost nothing. He follows both the acc and the me. metrics, behavior, browser and a bunch of other open, semi-hidden and generally hidden parameters. Those. they have had so-called ClientIDs for a long time, where exactly you are already recorded as some kind of ID.
You can clean cookies, delete everything, install antiviruses and blockers. But after 5 minutes of surfing the Internet, you will be easily identified again as that ID and that's it.
Surveillance is total, of course you can deprive yourself and panic from this, but just treat it as modern realities, like the fact that cars drive on the roads, not horses, or that Putin is the president.