What will happen then? Will the police come?
Or, for example, copy the game and codes to a flash drive and go play at an internet cafe.
Or, send me screenshots in a private message. No one will find out.
Or, extract all possible information from the game, record it on a disc, go to an internet cafe, and post it on some Chinese forum. The information will spread across the internet from the Chinese forum, and no one will know that it was leaked by some Russian tester.
Or, an even better option. Instead of an internet cafe, send the disc by mail to a friend who lives in a geographically distant location. That friend will break the information into parts, send it by mail to their friends, and these friends will go to local internet cafes and post the information on different foreign forums.
Access is given to test the server's functionality and find bugs, not to secretly leak game data. If they want to, they can still figure out where the leak came from.