I have long been a client of Alfa-Bank, from time to time I receive their newsletter with news and offers.
So yesterday I received a letter asking for an “anonymous survey” from Alfa-Bank.

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Seeing the link
alfabank.ru/retail/poll/?s=0000000 * I immediately had doubts about the following line of the letter: "The survey is conducted anonymously and does not require the provision of personal information."
My assumption that the variable “s” is an identification number by which Alfa-Bank will be able to determine and correlate the answers and customer data from the client database.
If so, then anonymity is out of the question.
Maybe this is just my paranoia, but what do you think about it?
* All numbers in “s = 0000000” have been replaced by 0.