Harry Potter | Why was Snape so good at Occlumency? | Wizarding World https://www.harrypotter.com/features/why-was-snape-so-good-at-occlumency
Occlumency, Snape once told Harry, “seals the mind against magical intrusion and influence.” And Snape was a master of Occlumency, so he knew what he was talking about. But why was he so good at se…
whilst also apparently feeding information to Voldemort that put him directly in danger