Transfer cookies to another browser

natureguy said:

yes,it is possible.use cookie stealing or cookie hijacking method.although its illegal and cyber crime.

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mayllopl said:

Thanks for answer. but I don't want steal nothing from nobody , asking is maybe are some pages where people share fake created cookies or something like this, or maybe some soft to create fake (cookies generator) cookies to can upload to browser , to later page see, that I'm old user , not new or after cleaning cookies from browser. I want do this to have different fingerprints. Because change canvas and WebGL is not to enough and page also checking cookies probably.

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adverts said:

Doesn't exist because any cookies that contain sensitive information will be encrypted on the server side. You are the client side and will never be able to decrypt the cookies. Slapping in random cookies won't do anything. The server will just reject them.

This is the underlying principal of cookie-based authentication.

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mayllopl said:

Thanks @adverts
You open my mind for it.
Problem is we doing some action les't say (sever A) , catch our actions and making ban.
We made it actions by Multilogin , but doesnt work like should work, different Canvas always , different WebGL etc etc but server A still see that this activity can be make by some 1-2 persons , not like for 100 real different people. Different IPs of course , proxy data center. (now we will be test with residential proxy)
Multilogin support said it can be maybe because we not collect cookies on browser profiles, always made actions from new fresh profiles
That I start looking thinkgs about cookies , is it possible to create some fake and add to browsers.
But now I know how it work.

I have another question , because now making history on Multilogin profiles, and we will repeact action after few days , when profiles collect some cookies etc.
Is it possible that Server A, checking cookies from other sites which I visited ? Or Server A only checking own cookies which sent me on 1st visit of page ?

Could you help me with it ? To can more understand.
Thanks

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adverts said:

This depends on the Origin policy. But a properly designed browser (e.g., your standard firefox, chrome, safari, edge, etc.) will not allow cross domain cookie sharing since this is a security issue (unless explicitly set by the server or via a vulnerability).

Basically, if the sites you're visiting are all owned by the same "company" that can set the Origin policy on the cookie for the multiple domains, then yes, they can track which of "their" sites you visit. For example, Facebook, which owns Instagram/whatsapp, can track you between facebook, ig and whatsapp if they wanted to.

But FB cannot track to say.. google or reddit. Same thing applies--google can track you to youtube, google, gmail, etc but not to amazon or Microsoft.

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mayllopl said:

Thanks @adverts
Is "Server A" can see my saved Bookmarks from browser ? Or this is also not possible/illegal ?
Want to ask to not lost much time to create browser profiles with all bookmark randomly etc.

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