ELI5:How do spammers get hold of your e-mail even after you're careful with who you provide your e-mail to and which sites you log in to using Google? Like when you find yourself subscribed to shopping sites or insurance claims you never even heard of.

ELI5:How do spammers get hold of your e-mail even after you're careful with who you provide your e-mail to and which sites you log in to using Google? Like when you find yourself subscribed to shopping sites or insurance claims you never even heard of. * /r/explainlikeimfive

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