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When talking about VPN, the idea almost always comes to mind - to set up your own VPN on a rented server, thereby, supposedly, protecting yourself from the VPN service issuing logs and your data to third parties.
After all, if the VPN is your own, then how will they request data? I will not give myself away!
In fact, everything is much more complicated and information about you will be given away, and how. A request comes to the hosting provider where you rented the server - who was sitting there, at such-and-such an IP address at such-and-such a time. Most hosting providers will give you away (namely, the data that you specified when registering for the server rental, the IP address, possibly the fingerprints of your device from which you connected to their servers). And they can also give away all your traffic, which most hosting providers log.
You may object - well, I can rent a server from some provider that does not give away user data. But there is a BIG BUT, I have NEVER met such providers who had THEIR OWN Data Center. All/Almost all such hosting providers rent a large server from some data center. And so, they did not give your data to a third party. Now the question can go directly to the data center. And the data center will give it in 99% of cases, because such data centers are very seriously controlled by the law and local special services.
And another very interesting point. People from the data center/hosting provider can easily log into your rented server and arrange for you, starting from logging all your actions on the server, ending with sending malicious code to your server, which can manipulate your traffic by introducing viruses into it and sending you the wrong values that you need (You click a button on some site, and in response you receive not a response from the desired site, but malware).
When you go to a site using your VPN, the site suddenly decides to deanonymize you. And, for example, the secret services make a request to the Internet provider, who connected to the IP address of your VPN at such and such a time. In the case of your VPN - most likely you will be the only one in the whole country. And in the case of a commercial VPN - it will give out all the clients of this VPN who used this IP address at that time and the attacker will also have to understand which of them visited this site.
Your VPN often provides anonymity even worse than a regular commercial VPN (Even regular commercial ones, not to mention those that are aimed specifically at privacy and anonymity). Therefore, your VPN is not better at all and certainly not a guarantee of anonymity.
After all, if the VPN is your own, then how will they request data? I will not give myself away!
In fact, everything is much more complicated and information about you will be given away, and how. A request comes to the hosting provider where you rented the server - who was sitting there, at such-and-such an IP address at such-and-such a time. Most hosting providers will give you away (namely, the data that you specified when registering for the server rental, the IP address, possibly the fingerprints of your device from which you connected to their servers). And they can also give away all your traffic, which most hosting providers log.
You may object - well, I can rent a server from some provider that does not give away user data. But there is a BIG BUT, I have NEVER met such providers who had THEIR OWN Data Center. All/Almost all such hosting providers rent a large server from some data center. And so, they did not give your data to a third party. Now the question can go directly to the data center. And the data center will give it in 99% of cases, because such data centers are very seriously controlled by the law and local special services.
And another very interesting point. People from the data center/hosting provider can easily log into your rented server and arrange for you, starting from logging all your actions on the server, ending with sending malicious code to your server, which can manipulate your traffic by introducing viruses into it and sending you the wrong values that you need (You click a button on some site, and in response you receive not a response from the desired site, but malware).
When you go to a site using your VPN, the site suddenly decides to deanonymize you. And, for example, the secret services make a request to the Internet provider, who connected to the IP address of your VPN at such and such a time. In the case of your VPN - most likely you will be the only one in the whole country. And in the case of a commercial VPN - it will give out all the clients of this VPN who used this IP address at that time and the attacker will also have to understand which of them visited this site.
Your VPN often provides anonymity even worse than a regular commercial VPN (Even regular commercial ones, not to mention those that are aimed specifically at privacy and anonymity). Therefore, your VPN is not better at all and certainly not a guarantee of anonymity.
