Stop and block stalker and fake sessions

New Member
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Hi, how can i block certain website from accessing my store ? 
there is these services such as that promotes product hunting service, basically spying on stores and directing their customer to other shopify stores so they can steal ideas and other people work. 
I want to stop this because it is annoying to see stats get messed up by fake sessions that its only target is to steal ideas  

And I do not want to go for expensive apps that block the site, it is not worth spending monthly fee on that, and I think it should be automatic by shopify that they update a list of these scammers